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1. Frustrated S = 1/2 Chains in One-Dimensional Correlated Metal Ti4MnBi2

Author

Li, X. Y., Nocera, A., Foyetsova, K., Sawatzky, G. A., Oudah, M., Murai, N., Kofu, M., Matsuura, M., Tamatsukuri, H., and Aronson, M. C.

Subjects
Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science
Abstract

Electronic correlations lead to heavy quasiparticles in three-dimensional metals, and their collapse can destabilize magnetic moments. It is an open question whether there is an analogous instability in one-dimensional (1D) systems, unanswered due to the lack of metallic spin chains. We report neutron scattering measurements and Density Matrix Renormalization Group calculations establishing spinons in the correlated metal Ti4MnBi2, confirming it is 1D. Ti4MnBi2 is inherently frustrated, forming near a quantum critical point separating two T = 0 phases of the J1-J2 XXZ model. The lack of magnetic order above 0.3 K results from these quantum critical fluctuations, potentially compounded by Kondo moment compensation. Ti4MnBi2 provides the first experimental evidence that 1D magnetism, previously the exclusive domain of insulators, persists in metallic systems with moderate correlations., Comment: 13 pages, 4 figures

Published
2024

2. Excitation Spectrum and Spin Hamiltonian of the Frustrated Quantum Ising Magnet Pr$_3$BWO$_9$

Author

Nagl, J., Flavián, D., Hayashida, S., Povarov, K. Yu., Yan, M., Murai, N., Ohira-Kawamura, S., Simutis, G., Hicken, T. J., Luetkens, H., Baines, C., Hauspurg, A., Schwarze, B. V., Husstedt, F., Pomjakushin, V., Fennell, T., Yan, Z., Gvasaliya, S., and Zheludev, A.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

We present a thorough experimental investigation on single crystals of the rare-earth based frustrated quantum antiferromagnet Pr$_3$BWO$_9$, a purported spin-liquid candidate on the breathing kagome lattice. This material possesses a disordered ground state with an unusual excitation spectrum involving a coexistence of sharp spin-waves and broad continuum excitations. Nevertheless, we show through a combination of thermodynamic, magnetometric and spectroscopic probes with detailed theoretical modeling that it should be understood in a completely different framework. The crystal field splits the lowest quasi-doublet states into two singlets moderately coupled through frustrated superexchange, resulting in a simple effective Hamiltonian of an Ising model in a transverse magnetic field. While our neutron spectroscopy data do point to significant correlations within the kagome planes, the dominant interactions are out-of-plane, forming frustrated triangular spin-tubes through two competing ferro-antiferromagnetic bonds. The resulting ground state is a simple quantum paramagnet, but with significant modifications to both thermodynamic and dynamic properties due to small perturbations to the transverse field Ising model in the form of hyperfine enhanced nuclear moments and weak structural disorder., Comment: 21 pages, 12 figures

Published
2024

3. Continuum excitations in a spin-supersolid on a triangular lattice

Author

Zhu, M., Romerio, V., Steiger, N., Nabi, S. D., Murai, N., Ohira-Kawamura, S., Povarov, K. Yu., Skourski, Y., Sibille, R., Keller, L., Yan, Z., Gvasaliya, S., and Zheludev, A.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

Magnetic, thermodynamic, neutron diffraction and inelastic neutron scattering are used to study spin correlations in the easy-axis XXZ triangular lattice magnet K2Co(SeO3)2. Despite the presence of quasi-2D "supersolid" magnetic order, the low-energy excitation spectrum contains no sharp modes and is instead a broad and structured multi-particle continuum. Applying a weak magnetic field drives the system into an m = 1/3 fractional magnetization plateau phase and restores sharp spin wave modes. To some extent, the behavior at zero field can be understood in terms of spin wave decay. However, the presence of clear excitation minima at the M-points of the Brillouin zone suggest that the spinon language may provide a more adequate description, and signals a possible proximity to a Dirac spin liquid state.

Published
2024

4. Effect of the Factor XIa Inhibitor Asundexian According to Baseline Infarct Pattern and on MRI Covert Infarct Outcomes

Author

Smith, Eric E., Shoamanesh, Ashkan, Xu, Lizhen, Heenan, Laura, Saad, Feryal, Colorado, Pablo, Chen, Chih-Hao, Lemmens, Robin, De Marchis, Gian Marco, Caso, Valeria, Masjuan, Jaime, Hirano, Teruyuki, Milanov, Ivan, Campbell, Bruce C.V., Mas, Jean-Louis, Connolly, Stuart J., Mundl, Hardi, Hart, Robert G., Bailey, P., Kleinig, T., Cordato, D., Choi, P., Garcia-Esperon, C., Chew, A., Cloud, G., Stanislaus, V., Krause, M., Priglinger, M., Grimley, R., Ghia, D., Sahathevan, R., Brown, H., Kwan, C., Devlin, M., Greisenegger, S., Bonelli-Nauer, S., Rath, J., Langer, A., Marko, M., Ferrari, J., Bernegger, A., Baumgartinger, M., Vigl, M., Krebs, S., Lang, W., Knoflach, M., Dejakum, B., Kiechl, S., Töll, T., Domig, L., Mutzenbach, J.S., Ganser, B., Hecker, C., Rösler, C., Bubel, N., Pikija, S., Zellner, T., Leitner, U., Berger, O., Surböck, B., Beirer, S., Staykov, D., Schrammel, D., Halilovic, A., Frattner, M., Barmherzigen, D., Lampl, C., Höfer, C., Nagl, S., Bocksrucker, C., Demeestere, J., Desfontaines, P., Ciobanu, C., De Pauw, A., Terwecoren, A., Hasenbroekx, M.C., Clement, F., De Klippel, N., Soors, P., Hermans, S., De Raedt, S., Vandervorst, F., Seynaeve, L., Fockaert, N., Smet, S., Rutgers, M., Del Gaudio, N., Paindeville, P., Staikov, I., Simeonova, A., Stoyanova, I., Cholakova, M., Mihnev, N., Petrova, T., Koralova, A., Dimov, D., Kuzev, Y., Danovska, M., Marinova, D., Marinova-Trifonova, D., Ovcharova, E., Mladenovski, I., Yanakieva, M., Stoev, P., Dimitrova, M., Todorova-Georgieva, S., Haralanov, L., Milkov, B., Solakov, D., Petkova, N., Ignatova-Valkova, V., Karabinov, V., Marinova, V., Miteva, Y., Andonova, V., Kasabova, D., Kostadinova, E., Shopova-Vrabcheva, Y., Gatev, D., Semova, D., Halil, E., Kaprelyan, A., Ivanov, B., Panov, G., Grudkova, M., Syuleyman, N., Kalpachki, R., Alexiev, F., Ivanova, I., Kancheva, K., Sakelarova, T., Maslarov, D., Drenska, D., Georgiev, V., Petrova, K., Petrova, N., Ivanova, I., Semerdjieva, N., Zhelyazkov, P., Spasova-Markova, S., Dong, X., Wang, D., Wang, S., Huang, W., Zhao, H., Wang, C., Jie, L., Xinyang, Y., Ping, Z., Dong, Q., Wang, Y., Fuling, Y., Yue, W., Liu, R., Yang, Y., Stetkarova, I., Mikulenka, P., Vasko, P., Peisker, T., Bar, M., Roubec, M., Mikulik, R., Cabukova, M., Vinklarek, J., Kovar, M., Pansky, M., Mencl, P., Skoda, O., Carek, M., Pernicka, M., Skodova, M., Geier, P., Cepkova, J., Drlik, J., Prax, T., Herzig, R., Krajickova, D., Vitkova, E., Haluskova, S., Vaclavik, D., Martinkova, J., Blejcharova, K., Tkacova, M., Pavlik, O., Nevšímalová, M., Rosol, J., Nevsimalova, M., Hruby, R., Iversen, H., Andersen, A.V., Rahimi, D., Christensen, H., Grundtvig, J., Hjort, N., Andersen, G., Sandal, B., Stilund, M., Modrau, B., Strade, A., Porobic, M., Andersen, S.D., Kruuse, C., Ölmestig, J., Kolmos, M., Parvez, A., Christensen, T., Stokholm, J., Jensen, H.B., Putaala, J., Strbian, D., Sibolt, G., Tiainen, M., Martinez-Majander, N., Curtze, S., Raty, S., Kraemer, Y., Roine, R., Aivo, J., Ruuskanen, J., Ylikotila, P., Roine, S., Hallikainen, M., Jakala, P., Kurl, S., Julkunen, V., Sibon, I., Olindo, S., Richard, S., Larrue, V., Gollion, C., Catala, H., Henon, H., Lucie, D.S., Nelly, D., Calvet, D., Malbranque, A., Mazé, B., Barbieux-Ghitu, C., Rosso, C., Samson, Y., Vannier, S., Moulin, T., Bonnet, L., Reiner, P., Buffon, F., Denier, C., Amri, K., Legris, N., Chassin, O., Selli, N., Mariana, S., Berrouschot, J., Stoll, A., Klunk, D., Keilitz, J., Neustadt, M., Zerrenner, S., Veltkamp, R., Hajjar, K., Heeger, A., Winezki, E., Apel, L., Pompsch, M., Mueller, P., Rappard, P., Auer, R., Ringleb, P.A., Berberich, A., Heyse, M., Mundiyanapurath, S., Reiff, T., Poli, S., Gomez-Exposito, A., Mengel, A., Tünnerhoff, J., Adeyemi, K., Poli, K., Kusch, V., Pelz, J., Michalski, D., Wartenberg, K., Althaus, K., Tavares, F., Mueller, S., Soda, H., Rascher, A., Hiermann, E., Weinhardt, R., Weissenborn, K., Leotescu, A., Grosse, G., Worthmann, H., Ernst, J., Gabriel, M., Schuppner, R., Schäfer, J.H., Charisse, D., Gruber, K., Kurka, N., Reitz, S.C., Pfeilschifter, W., Lee, J.I., Gliem, M., Moll, M., Steiner, T., Segura, L., Szegedi, N., Barandi, D., Uhrinakova, L., Czencz, M., Pasztor, M., Gyuker, N., Bartha, N.E., May, Z., Simony, Z., Szasz, G., Kakuk, I., Pető, N., Panczel, G.F., Olah, A., Racz, O., Balla, T., Horvath, B., Tuba, K., Czinderi, V., Klivenyi, P., Annus, A., Hertelendy, P., Szapary, L., Bosnyak, E., Kalmar, P., Karadi, Z., Cziba, L., Olah, L., Berki, A., Hudak, L., Kozák, M., Babel, S., Nemeth, L., Molnár, B., Simon, Z., Roveri, L., Cerri, F., Giacalone, G., Zini, A., Mauro, G., Asioli, G.M., Forlivesi, S., Arnone, G., Fiaccadori, A., Maria Fontana Francesca, E., Allegra, G., Mosconi, M.G., Longoni, M., Terlizzi, R., Paolucci, M., Tassi, R., Franci, B., Lucani, B., Domenichelli, C., Paoletti, D., Acampa, M., Zedde, M.L., Pezzella, F.R., Mangiardi, M., Galizia, P., Anticoli, S., Scalise, S., Lattanzi, S., Norata, D., Cannuccia, M., Cavallini, A., Federica, F., Denaro, M.F., Tosi, P., Sonoda, K., Kawajiri, M., Kusano, Y., Haraguchi, K., Kawano, H., Terasaki, T., Kaneko, C., Murase, S., Kumagai, M., Murai, N., Miyazaki, Y., Mori, T., Hatano, T., Kawanishi, M., Ochiai, J., Ishihara, S., Uehara, T., Yasaka, M., Nakagawa, H., Makino, M., Yonehara, T., Fukushima, Y., Hirotsune, N., Sakai, N., Yamasaki, M., Coutinho, J., Wouters, A., den Hertog, H., Zwartbol, R., Beumer, D., Kerklaan, J., Hilkens, P., Schreuder, T., Propper, D., Slowik, A., Wlodarczyk, E., Wrona, P., Pulyk, R., Lasek-Bal, A., Kosarz-Lanczek, K., Puz, P., Bilik, M., Magielska, A., Zamiela – Żółciak, A., Ochocinska, L., Bahdasaryan, S., Stępień, A., Dębiec, A., Joanna, K., Pawel, M., Jacek, S., Daniel, P., Marta, S., Rejdak, K., Wojczal, J., Luchowski, P., Fryze, W., Wisniewska, A., Krzyzanowska, M., Skowron, P., Wolosz, A., Galan, A., Grzymala, K., Krajewska, M., Nowak, R., Kłos, M., Cruz, V., Castro, P., Ferro, J., Canhão, P., Gouveia, R., Inácio, N., Rodrigues, M., Rachão, A., Ionel, C., Pereira, L., Viana-Baptista, M., Machado, C., Fernandes, C., Sargento, J., Inácio, N., Timchenko, L., Mironova, J., Zhadan, O., Torgashova, A., Bazhenova, O., Barashenkova, M., Kireeva, M., Romadina, N., Stepanova, I., Lenskaya, L., Lukinykh, L., Vorontsova, T., Agafina, A., Fedorova, A., Yashina, A., Alasheev, A., Smolkin, A., Prazdnichkova, E., Lutskovich, O., Gonysheva, Y., Mordvintseva, E., Nechaev, A., Martynova, E., Fedoraeva, N., Vishnyakova, T., Popov, D., Merzliakova, A., Margarita, K., Rechkalova, L., Ilyina, A., Kurenkova, N., Barbarash, O., Bazdyrev, E., Zvereva, T., Hromova, A., Morkvenas, A., Postnikova, E., Kovalenko, G., Taran, I., Pavlov, L., Ott, M., Chernitsova, N., Vodopyanova, N., Drozdova, E., Korebo, E., Lobanova, M., Lazareva, N., Snegova, N., Nikolaeva, O., Kolesnikov, Y., Kosheleva, Y., Krastev, G., Tomasova, K., Danis, M., Mako, M., Jankovicova, Z., Stevkova, Z., Kovacik, M., Kubikova, T., Jarosova, A., Serdahely, V., Cilingova, I., Pribulova, I., Sedlak, J., Slebodova, K., Paldaufova, M., Risnovsky, R., Berndtova, B., Urbanova, I., Junas, R., Karapetian, S., Gurcik, L., Vantrobova, A., Verbovsky, F., Vanacka, K., Ferenc, M., Galik, P., Bucakova, S., Ferencova, M., Kubalova, P., Boksanska, Z., Zacharova, E., Mahundi, E., Judita, H., Bachnak, M., Turcani, P., Kvasnicova Kamenska, A., Jurik, M., Vestenicka, V., Kycina, M., Sagatova, E., Dvorak, M., Hlubekova, A., Kucera, C., Gernath, L., Ferenc, M., Frimmelova, P., Slebodnikova, J., Aksteinerova, N., Horny, V., Gregova, Z., Segura, T., Romero, C., Ayo, O., Masjuan Vallejo, J., Cruz, A., De felipe, A, Matute, M.C., Garcia, S., Tembl Ferrairo, J., Vielba, I., Morales Caba, L., Molina, C., Garcia-Tornel García-Camba, Á., Requena Ruiz, M., Noelia, R., Rodriguez-Yañez, M., Rodriguez Castro, E., Lopez, I., Santamaria, M., Arias, S., Purroy García, F., Vázquez Justes, D., Mauri Capdevila, G., Vicente Pascual, M., Martí Fabregas, J., Camps Renom, P., Rodríguez Campello, A., Giralt, E., Krupinski, J., Molina, J., Trillo Senin, C. Ramos Martin, S., De La Fuente Sanz, E., Moniche, F., Manuel, M.R., Pardo, B., Martínez, I., Hernández Pérez, M., Arenillas Lara, J.F., De Lera, M., Egido, J.A., Gomez Escalonilla, C., Guillan, M., Martinez, J., Lindgren, A., Andsberg, G., Wictor, L., Leonidou, M., Stenman, M., Dalberg, N., Laska, A.C., Grünfeldt, A., Lundström, A., Nadzjafov, E., Rooth, E., Dalenbring, I., Sandén, P., Johansson, E., Thomas, G., Zietz, A.V., Rudin, S., Dittrich, T.D., Lilian, K., Kägi, G., Vehoff, J., Arnold, M., Scutelnic, A., Clénin, L., Beyeler, M., Madlaine, M., Maamari, B., Siepen, B., Vynckier, J., Tarnutzer, A., Bertschi, D., Luciani, M., Cereda, C., Maulucci, F., Bianco, G., Shairin, S., Pihan, H.A., Salmen, S., Quinn, T., McAlpine, C., Wright, F., Kalladka, D., Taylor, E., Sohaa, J., Brown, Z., Dawson, J., Cameron, A., Muir, S., Dima, S., Khan, U., Zhang, L., Warburton, E., Chatterjee, K., Nallasivan, A., Curran, D., Haider, S., Ghani, U., Kenton, A., Dallol, B., Mirza, M., Menezes, B., Davies, R., Robinson, T.G., Manning, L., Sztriha, L., Phinney, T., Sethi, P., Altafullah, I., Sharaf, A., Ostrander, M., Renati, S., Burgin, W.S., Olds, K., Delio, P., Malek, A., Dissin, J., Khatri, P., Flaherty, M., Demel, S., and Dofitas, S.

Published
2024
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5. Glasslike phonon excitation caused by ferroelectric structural instability

Author

Ishii, Y., Yamamoto, A., Sato, N., Nambu, Y., Ohira-Kawamura, S., Murai, N., Mori, T., and Mori, S.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Other Condensed Matter
Abstract

Quest for new states of matter near an ordered phase is a promising route for making modern physics forward. By probing thermal properties of a ferroelectric (FE) crystal Ba1-xSrxAl2O4, we have clarified that low-energy excitation of acoustic phonons is remarkably enhanced with critical behavior at the border of the FE phase. The phonon spectrum is significantly damped toward the FE phase boundary and transforms into glasslike phonon excitation which is reminiscent of a boson peak. This system thus links long-standing issues of amorphous solids and structural instability in crystals to pave the way to controlling lattice fluctuation as a new tuning parameter., Comment: 6 pages, 4 figures

Published
2021

6. $\mathbf{q}=\mathbf{0}$ long-range magnetic order in centennialite CaCu$_3$(OD)$_6$Cl$_2$$\cdot$0.6D$_2$O: A spin-1/2 perfect kagome antiferromagnet with $J_1$-$J_2$-$J_d$

Author

Iida, K., Yoshida, H. K., Nakao, A., Jeschke, H. O., Iqbal, Y., Nakajima, K., Ohira-Kawamura, S., Munakata, K., Inamura, Y., Murai, N., Ishikado, M., Kumai, R., Okada, T., Oda, M., Kakurai, K., and Matsuda, M.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

Crystal and magnetic structures of the mineral centennialite CaCu$_3$(OH)$_6$Cl$_2\cdot0.6$H$_2$O are investigated by means of synchrotron x-ray diffraction and neutron diffraction measurements complemented by density functional theory (DFT) and pseudofermion functional renormalization group (PFFRG) calculations. CaCu$_3$(OH)$_6$Cl$_2\cdot0.6$H$_2$O crystallizes in the $P\bar{3}m1$ space group and Cu$^{2+}$ ions form a geometrically perfect kagome network with antiferromagnetic $J_1$. No intersite disorder between Cu$^{2+}$ and Ca$^{2+}$ ions is detected. CaCu$_3$(OH)$_6$Cl$_2\cdot0.6$H$_2$O enters a magnetic long-range ordered state below $T_\text{N}=7.2$~K, and the $\mathbf{q}=\mathbf{0}$ magnetic structure with negative vector spin chirality is obtained. The ordered moment at 0.3~K is suppressed to $0.58(2)\mu_\text{B}$. Our DFT calculations indicate the presence of antiferromagnetic $J_2$ and ferromagnetic $J_d$ superexchange couplings of a strength which places the system at the crossroads of three magnetic orders (at the classical level) and a spin-$\frac{1}{2}$ PFFRG analysis shows a dominance of $\mathbf{q}=\mathbf{0}$ type magnetic correlations, consistent with and indicating proximity to the observed $\mathbf{q}=\mathbf{0}$ spin structure. The results suggest that this material is located close to a quantum critical point and is a good realization of a $J_1$-$J_2$-$J_d$ kagome antiferromagnet., Comment: 4 figures and supplemental materials

Published
2020
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7. Horizontal Line Nodes in Sr2RuO4 Proved by Spin Resonance

Author

Iida, K., Kofu, M., Suzuki, K., Murai, N., Ohira-Kawamura, S., Kajimoto, R., Inamura, Y., Ishikado, M., Hasegawa, S., Masuda, T., Yoshida, Y., Kakurai, K., Machida, K., and Lee, S. -H.

Subjects
Condensed Matter - Superconductivity
Abstract

We investigated the low-energy incommensurate (IC) magnetic fluctuations in Sr$_2$RuO$_4$ by the high-resolution inelastic neutron scattering measurements and random phase approximation (RPA) calculations. We observed a spin resonance with energy of $\hbar\omega_\text{res}=0.56$~meV centered at a characteristic wavevector $\mathbf{Q}_\text{res}=(0.3, 0.3, 0.5)$. The resonance energy corresponds well to the superconducting gap $2\Delta=0.56$~meV estimated by the tunneling spectroscopy. The spin resonance shows the $L$ modulation with a maximum at around $L = 0.5$. The $L$ modulated intensity of the spin resonance and our RPA calculations indicate that the superconducting gaps regarding the quasi-one-dimensional $\alpha$ and $\beta$ sheets at the Fermi surfaces have the horizontal line nodes. These results may set a strong constraint on the pairing symmetry of Sr$_2$RuO$_4$. We also discuss the implications on possible superconducting order parameters., Comment: arXiv admin note: substantial text overlap with arXiv:1904.01234

Published
2020
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8. Coexisting spin resonance and long-range magnetic order of Eu in EuRbFe$_4$As$_4$

Author

Iida, K., Nagai, Y., Ishida, S., Ishikado, M., Murai, N., Christianson, A. D., Yoshida, H., Inamura, Y., Nakamura, H., Nakao, A., Munakata, K., Kagerbauer, D., Eisterer, M., Kawashima, K., Yoshida, Y., Eisaki, H., and Iyo, A.

Subjects
Condensed Matter - Superconductivity
Abstract

Magnetic excitations and magnetic structure of EuRbFe$_4$As$_4$ were investigated by inelastic neutron scattering (INS), neutron diffraction, and random phase approximation (RPA) calculations. Below the superconducting transition temperature $T_\text{c}=36.5$~K, the INS spectra exhibit the neutron spin resonances at $Q_\text{res}=1.27(2)$~$\text{\AA}^{-1}$ and $1.79(3)$~$\text{\AA}^{-1}$. They correspond to the $\mathbf{Q}=(0.5,0.5,1)$ and $(0.5,0.5,3)$ nesting wave vectors, showing three dimensional nature of the band structure. The characteristic energy of the neutron spin resonance is $E_\text{res}=17.7(3)$~meV corresponding to $5.7(1)k_\text{B}T_\text{c}$. Observation of the neutron spin resonance mode and our RPA calculations in conjunction with the recent optical conductivity measurements are indicative of the $s_\pm$ superconducting pairing symmetry in EuRbFe$_4$As$_4$. In addition to the neutron spin resonance mode, upon decreasing temperature below the magnetic transition temperature $T_\text{N}=15$~K, the spin wave excitation originating in the long-range magnetic order of the Eu sublattice was observed in the low-energy inelastic channel. Single-crystal neutron diffraction measurements demonstrate that the magnetic propagation vector of the Eu sublattice is $\mathbf{k}=(0, 0, 0.25)$, representing the three-dimensional antiferromagnetic order. Linear spin wave calculations assuming the obtained magnetic structure with the intra- and inter-plane nearest neighbor exchange couplings of $J_1/k_\text{B}=-1.31$~K and $J_c/k_\text{B}=0.08$~K can reproduce quantitatively the observed spin wave excitation. Our results show that superconductivity and long-range magnetic order of Eu coexist in EuRbFe$_4$As$_4$ whereas the coupling between them is rather weak., Comment: 8 pages, 4 figures

Published
2019
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9. Quantum magnetisms in uniform triangular lattices Li2AMo3O8 (A = In, Sc)

Author

Iida, K., Yoshida, H., Okabe, H., Katayama, N., Ishii, Y., Koda, A., Inamura, Y., Murai, N., Ishikado, M., Kadono, R., and Kajimoto, R.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

Molecular based spin-1/2 triangular lattice systems such as LiZn$_2$Mo$_3$O$_8$ have attracted research interest. Distortions, defects, and intersite disorder are suppressed in such molecular-based magnets, and intrinsic geometrical frustration gives rise to unconventional and unexpected ground states. Li$_2$$A$Mo$_3$O$_8$ ($A$ = In or Sc) is such a compound where spin-1/2 Mo$_3$O$_{13}$ clusters in place of Mo ions form the uniform triangular lattice. Their ground states are different according to the $A$ site. Li$_2$InMo$_3$O$_8$ undergoes conventional $120^\circ$ long-range magnetic order below $T_\text{N}=12$~K whereas isomorphic Li$_2$ScMo$_3$O$_8$ exhibits no long-range magnetic order down to 0.5~K. Here, we report exotic magnetisms in Li$_2$InMo$_3$O$_8$ and Li$_2$ScMo$_3$O$_8$ investigated by muon spin rotation ($\mu$SR) and inelastic neutron scattering (INS) spectroscopies using polycrystalline samples. Li$_2$InMo$_3$O$_8$ and Li$_2$ScMo$_3$O$_8$ show completely different behaviors observed in both $\mu$SR and INS measurements, representing their different ground states. Li$_2$InMo$_3$O$_8$ exhibits spin wave excitation which is quantitatively described by the nearest neighbor anisotropic Heisenberg model based on the $120^\circ$ spin structure. In contrast, Li$_2$ScMo$_3$O$_8$ undergoes short-range magnetic order below 4~K with quantum-spin-liquid-like magnetic fluctuations down to the base temperature. Origin of the different ground states is discussed in terms of anisotropies of crystal structures and magnetic interactions., Comment: Sci. Rep. 9, 1826 (2019)

Published
2019
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10. Spin Resonance in the New-Structure-Type Iron-Based Superconductor CaKFe4As4

Author

Iida, K., Ishikado, M., Nagai, Y., Yoshida, H., Christianson, A. D., Murai, N., Kawashima, K., Yoshida, Y., Eisaki, H., and Iyo, A.

Subjects
Condensed Matter - Superconductivity
Abstract

The dynamical spin susceptibility in the new-structure-type iron-based superconductor CaKFe$_4$As$_4$ was investigated by using a combination of inelastic neutron scattering (INS) measurements and random phase approximation (RPA) calculations. Powder INS measurements show that the spin resonance at $Q_\text{res}=1.17(1)$~$\text{\AA}^{-1}$, corresponding to the $(\pi,\pi)$ nesting wave vector in tetragonal notation, evolves below $T_\text{c}$. The characteristic energy of the spin resonance $E_\text{res}=12.5$~meV is smaller than twice the size of the superconducting gap ($2\Delta$). The broad energy feature of the dynamical susceptibility of the spin resonance can be explained by the RPA calculations, in which the different superconducting gaps on different Fermi surfaces are taken into account. Our INS and PRA studies demonstrate that the superconducting pairing nature in CaKFe$_4$As$_4$ is the $s_\pm$ symmetry., Comment: http://journals.jps.jp/doi/10.7566/JPSJ.86.093703

Published
2017
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11. Effect of magnetism on lattice dynamics in SrFe$_2$As$_2$ as seen via high resolution inelastic x-ray scattering

Author

Murai, N., Fukuda, T., Kobayashi, T., Nakajima, M., Uchiyama, H., Ishikawa, D., Tsutsui, S., Nakamura, H., Machida, M., Miyasaka, S., Tajima, S., and Baron, A. Q. R.

Subjects
Condensed Matter - Superconductivity
Abstract

Phonon spectra of detwinned {SrFe$_2$As$_2$} crystals, as measured by inelastic x-ray scattering, show clear anisotropy accompanying the magneto-structural transition at 200 K. We model the mode splitting using magnetic DFT calculations, including a phenomenological reduction in force-constant anisotropy that can be attributed to magnetic fluctuations. This serves as a starting point for a general model of phonons in this material applicable to both magnetic and non-magnetic phase. Using this model, the measured splitting in the magnetic phase below $\it T_{N}$, and the measured phonon linewidth, we set a lower bound on the mean magnetic fluctuation frequency above $\it T_{N}$ at 210 K., Comment: Accepted for publication in Phys.Rev.B (Rapid Communications)

Published
2015
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21. Early Osseointegration Attained by UV-Photo Treated Implant into Piezosurgery-Prepared Site Report II. Influences of Age and Gender

Author

Murai N, Miyazaki Y, Yutani T, Uejima N, Shimizu H, Miyazaki T, and Kawata A

Subjects
Age and gender, business.industry, Medicine, Dentistry, Implant, business, Piezosurgery, Osseointegration
Abstract

Purpose: The aim of this retrospective study was to examine the effects of age and gender on ISQ scales on 75 implant patients who received the UV photo functionalized implants, which were placed into piezosurgery-prepared site.

Published
2021

22. Early Osseointegration Attained by UV-Photo Treated Implant into Piezosurgery-Prepared Site. Report III. Influence of Surface Treatment by Hydrogen Peroxide Solution and Determination of Early Loading Timing

Author

Murai N, Shimizu H, Miyazaki Y, Miyazaki T, Kawata A, Uejima N, Oshida Y, and Yutani T

Subjects
chemistry.chemical_compound, Materials science, chemistry, Early loading, Implant, Hydrogen peroxide, Piezosurgery, Osseointegration, Biomedical engineering
Abstract

Purpose: The aims of this study were (1) to investigate effectiveness of hydrogen peroxide treatment on early osseointegration, and (2) to determine the best timing for early loading.

Published
2021

27. q=0 long-range magnetic order in centennialite CaCu3(OD)6Cl2·0.6D2O : A spin- 12 perfect kagome antiferromagnet with J1−J2−Jd

Author

Iida, K., primary, Yoshida, H. K., additional, Nakao, A., additional, Jeschke, H. O., additional, Iqbal, Y., additional, Nakajima, K., additional, Ohira-Kawamura, S., additional, Munakata, K., additional, Inamura, Y., additional, Murai, N., additional, Ishikado, M., additional, Kumai, R., additional, Okada, T., additional, Oda, M., additional, Kakurai, K., additional, and Matsuda, M., additional

Published
2020
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29. Large expert-curated database for benchmarking document similarity detection in biomedical literature search

Author

Brown, P. Zhou, Y. Tan, A.-C. El-Esawi, M.A. Liehr, T. Blanck, O. Gladue, D.P. Almeida, G.M.F. Cernava, T. Sorzano, C.O. Yeung, A.W.K. Engel, M.S. Chandrasekaran, A.R. Muth, T. Staege, M.S. Daulatabad, S.V. Widera, D. Zhang, J. Meule, A. Honjo, K. Pourret, O. Yin, C.-C. Zhang, Z. Cascella, M. Flegel, W.A. Goodyear, C.S. van Raaij, M.J. Bukowy-Bieryllo, Z. Campana, L.G. Kurniawan, N.A. Lalaouna, D. Hüttner, F.J. Ammerman, B.A. Ehret, F. Cobine, P.A. Tan, E.-C. Han, H. Xia, W. McCrum, C. Dings, R.P.M. Marinello, F. Nilsson, H. Nixon, B. Voskarides, K. Yang, L. Costa, V.D. Bengtsson-Palme, J. Bradshaw, W. Grimm, D.G. Kumar, N. Martis, E. Prieto, D. Sabnis, S.C. Amer, S.E.D.R. Liew, A.W.C. Perco, P. Rahimi, F. Riva, G. Zhang, C. Devkota, H.P. Ogami, K. Basharat, Z. Fierz, W. Siebers, R. Tan, K.H. Boehme, K.A. Brenneisen, P. Brown, J.A.L. Dalrymple, B.P. Harvey, D.J. Ng, G. Werten, S. Bleackley, M. Dai, Z. Dhariwal, R. Gelfer, Y. Hartmann, M.D. Miotla, P. Tamaian, R. Govender, P. Gurney-Champion, O.J. Kauppila, J.H. Zhang, X. Echeverría, N. Subhash, S. Sallmon, H. Tofani, M. Bae, T. Bosch, O. Cuív, P.O. Danchin, A. Diouf, B. Eerola, T. Evangelou, E. Filipp, F. Klump, H. Kurgan, L. Smith, S.S. Terrier, O. Tuttle, N. Ascher, D.B. Janga, S.C. Schulte, L.N. Becker, D. Browngardt, C. Bush, S.J. Gaullier, G. Ide, K. Meseko, C. Werner, G.D.A. Zaucha, J. Al-Farha, A.A. Greenwald, N.F. Popoola, S.I. Rahman, S. Xu, J. Yang, S.Y. Hiroi, N. Alper, O.M. Baker, C.I. Bitzer, M. Chacko, G. Debrabant, B. Dixon, R. Forano, E. Gilliham, M. Kelly, S. Klempnauer, K.-H. Lidbury, B.A. Lin, M.Z. Lynch, I. Ma, W. Maibach, E.W. Mather, D.E. Nandakumar, K.S. Ohgami, R.S. Parchi, P. Tressoldi, P. Xue, Y. Armitage, C. Barraud, P. Chatzitheochari, S. Coelho, L.P. Diao, J. Doxey, A.C. Gobet, A. Hu, P. Kaiser, S. Mitchell, K.M. Salama, M.F. Shabalin, I.G. Song, H. Stevanovic, D. Yadollahpour, A. Zeng, E. Zinke, K. Alimba, C.G. Beyene, T.J. Cao, Z. Chan, S.S. Gatchell, M. Kleppe, A. Piotrowski, M. Torga, G. Woldesemayat, A.A. Cosacak, M.I. Haston, S. Ross, S.A. Williams, R. Wong, A. Abramowitz, M.K. Effiong, A. Lee, S. Abid, M.B. Agarabi, C. Alaux, C. Albrecht, D.R. Atkins, G.J. Beck, C.R. Bonvin, A.M.J.J. Bourke, E. Brand, T. Braun, R.J. Bull, J.A. Cardoso, P. Carter, D. Delahay, R.M. Ducommun, B. Duijf, P.H.G. Epp, T. Eskelinen, E.-L. Fallah, M. Farber, D.B. Fernandez-Triana, J. Feyerabend, F. Florio, T. Friebe, M. Furuta, S. Gabrielsen, M. Gruber, J. Grybos, M. Han, Q. Heinrich, M. Helanterä, H. Huber, M. Jeltsch, A. Jiang, F. Josse, C. Jurman, G. Kamiya, H. de Keersmaecker, K. Kristiansson, E. de Leeuw, F.-E. Li, J. Liang, S. Lopez-Escamez, J.A. Lopez-Ruiz, F.J. Marchbank, K.J. Marschalek, R. Martín, C.S. Miele, A.E. Montagutelli, X. Morcillo, E. Nicoletti, R. Niehof, M. O'Toole, R. Ohtomo, T. Oster, H. Palma, J.-A. Paterson, R. Peifer, M. Portilla, M. Portillo, M.C. Pritchard, A.L. Pusch, S. Raghava, G.P.S. Roberts, N.J. Ross, K. Schuele, B. Sergeant, K. Shen, J. Stella, A. Sukocheva, O. Uversky, V.N. Vanneste, S. Villet, M.H. Viveiros, M. Vorholt, J.A. Weinstock, C. Yamato, M. Zabetakis, I. Zhao, X. Ziegler, A. Aizat, W.M. Atlas, L. Bridges, K.M. Chakraborty, S. Deschodt, M. Domingues, H.S. Esfahlani, S.S. Falk, S. Guisado, J.L. Kane, N.C. Kueberuwa, G. Lau, C.L. Liang, D. Liu, E. Luu, A.M. Ma, C. Ma, L. Moyer, R. Norris, A.D. Panthee, S. Parsons, J.R. Peng, Y. Pinto, I.M. Reschke, C.R. Sillanpää, E. Stewart, C.J. Uhle, F. Yang, H. Zhou, K. Zhu, S. Ashry, M. Bergsland, N. Berthold, M. Chen, C.-E. Colella, V. Cuypers, M. Eskew, E.A. Fan, X. Gajda, M. Gonzálezlez-Prendes, R. Goodin, A. Graham, E.B. Groen, E.J.N. Gutiérrez-Sacristán, A. Habes, M. Heffler, E. Higginbottom, D.B. Janzen, T. Jayaraman, J. Jibb, L.A. Jongen, S. Kinyanjui, T. Koleva-Kolarova, R.G. Li, Z. Liu, Y.-P. Lund, B.A. Lussier, A.A. Ma, L. Mier, P. Moore, M.D. Nagler, K. Orme, M.W. Pearson, J.A. Prajapati, A.S. Saito, Y. Tröder, S.E. Uchendu, F. Verloh, N. Voutchkova, D.D. Abu-Zaid, A. Bakkach, J. Baumert, P. Dono, M. Hanson, J. Herbelet, S. Hobbs, E. Kulkarni, A. Kumar, N. Liu, S. Loft, N.D. Reddan, T. Senghore, T. Vindin, H. Xu, H. Bannon, R. Chen, B. Cheung, J.T.K. Cooper, J. Esnakula, A.K. Feghali, K.A. Ghelardi, E. Gnasso, A. Horbar, J. Lai, H.M. Li, J. Ma, L. Ma, R. Pan, Z. Peres, M.A. Pranata, R. Seow, E. Sydes, M. Testoni, I. Westermair, A.L. Yang, Y. Afnan, M. Albiol, J. Albuquerque, L.G. Amir, S. Amiya, E. Amorim, R.M. An, Q. Andersen, S.U. Aplin, J.D. Argyropoulos, C. Asmann, Y.W. Assaeed, A.M. Atanasov, A.G. Atchison, D.A. Avery, S.V. Avillach, P. Baade, P.D. Backman, L. Badie, C. Baldi, A. Ball, E. Bardot, O. Barnett, A.G. Basner, M. Batra, J. Bazanova, O.M. Beale, A. Beddoe, T. Bell, M.L. Berezikov, E. Berners-Price, S. Bernhardt, P. Berry, E. Bessa, T.B. Billington, C. Birch, J. Blakely, R.D. Blaskovich, M.A.T. Blum, R. Boelaert, M. Bogdanos, D. Bosch, C. Bourgoin, T. Bouvard, D. Boykin, L.M. Bradley, G. Braun, D. Brownlie, J. Brühl, A. Burt, A. Butler, L.M. Byrareddy, S.N. Byrne, H.J. Cabantous, S. Calatayud, S. Candal, E. Carlson, K. Casillas, S. Castelvetro, V. Caswell, P.T. Cavalli, G. Cerovsky, V. Chagoyen, M. Chen, C.-S. Chen, D.F. Chen, H. Chen, H. Chen, J.-T. Chen, Y. Cheng, C. Cheng, J. Chinapaw, M. Chinopoulos, C. Cho, W.C.S. Chong, L. Chowdhury, D. Chwalibog, A. Ciresi, A. Cockcroft, S. Conesa, A. Cook, P.A. Cooper, D.N. Coqueret, O. Corea, E.M. Costa, A. Costa, E. Coupland, C. Crawford, S.Y. Cruz, A.D. Cui, H. Cui, Q. Culver, D.C. D'Angiulli, A. Dahms, T.E.S. Daigle, F. Dalgleish, R. Danielsen, H.E. Darras, S. Davidson, S.M. Day, D.A. Degirmenci, V. Demaison, L. Devriendt, K. Ding, J. Dogan, Y. Dong, X.C. Donner, C.F. Dressick, W. Drevon, C.A. Duan, H. Ducho, C. Dumaz, N. Dwarakanath, B.S. Ebell, M.H. Eisenhardt, S. Elkum, N. Engel, N. Erickson, T.B. Fairhead, M. Faville, M.J. Fejzo, M.S. Festa, F. Feteira, A. Flood-Page, P. Forsayeth, J. Fox, S.A. Franks, S.J. Frentiu, F.D. 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Christoffersen, T. Comel, J.C. Cosse, C. Cui, Y. van Dessel, P. Dhaval Diodato, D. Duffey, M. Dutt, A. Egea, L.G. El-Said, M. Faye, M. Fernandez-Fernandez, B. Foley, K.G. Founou, L.L. Fu, F. Gadelkareem, R.A. Galimov, E. Garip, G. Gemmill, A. Gouil, Q. Grey, J. Gridneva, Z. Grothe, M.J. Grébert, T. Guerrero, F. Guignard, L. Haenssgen, M.J. Hasler, D. Holgate, J.Y. Huang, A. Hulse-Kemp, A.M. Jean-Quartier, C. Jeon, S.-M. Jia, Y. Jutzeler, C. Kalatzis, P. Karim, M. Karsay, K. Keitel, A. Kempe, A. Keown, J.R. Khoo, C.M. Khwaja, N. Kievit, R.A. Kosanic, S. Koutoukidis, D.A. Kramer, P. Kumar, D. Kiraǧ, N. Lanza, G. Le, T.D. Leem, J.W. Leightley, D. Leite, A. Lercher, L. Li, Y. Lim, R. Lima, L.R.A. Lin, L. Ling, T. Liu, Y. Liu, Z. Lu, Y. Lum, F.M. Luo, H. Machhi, J. Macleod, A. Macwan, I. Madala, H.R. Madani, N. de Maio, N. Makowiecki, K. Mallinson, D.J. Margelyte, R. Maria, C. Markonis, Y. Marsili, L. Mavoa, S. McWilliams, L. Megersa, M. Souto-Maior, C. Menichetti, J. Mercieca-Bebber, R. Miller, J.J. Minde, D.-P.M. Minges, A. Mishra, E. Mishra, V.R. Moores, C. Morrice, N. Moskalensky, A.E. Navarin, N. Negera, E. Nolet, P. Nordberg, A. Nordén, R. Nowicki, J.P. Olova, N. Olszewski, P. Onzima, R. Pan, C.-L. Park, C. Park, D.I. Park, S. Patil, C.D. Pedro, S.A. Perry, S.R. Peter, J. Peterson, B.M. Pezzuolo, A. Pozdnyakov, I. Qian, S. Qin, L. Rafe, A. Raote, I. Raza, A. Rebl, H. Refai, O. Regan, T. Richa, T. Richardson, M.F. Robinson, K.R. Rossoni, L. Rouet, R. Safaei, S. Schneeberger, P.H.H. Schwotzer, D. Sebastian, A. Selinski, J. Seltmann, S. Sha, F. Shalev, N. Shang, J.-L. Singer, J. Singh, M. Smith, T. Solomon-Moore, E. Song, L. Soraggi, S. Stanley, R. Steckhan, N. Strobl, F. Subissi, L. Supriyanto, I. Surve, C.R. Suzuki, T. Syme, C. Sörelius, K. Tang, Y. Tantawy, M. Tennakoon, S. Teseo, S. Toelzer, C. Tomov, N. Tovar, M. Tran, L. Tripathi, S. Tuladhar, A.M. Ukubuiwe, A.C. Ung, C.O.L. Valgepea, K. Vatanparast, H. Vidal, A. Wang, F. Wang, Q. Watari, R. Webster, R. Webster, R. Wei, J. Wibowo, D. Wingenbach, T.S.H. Xavier, R.M. Xiao, S. Xiong, P. Xu, S. Xu, S. Yao, R. Yao, W. Yin, Q. Yu, Y. Zaitsu, M. Zeineb, Z. Zhan, X.-Y. Zhang, J. Zhang, R. Zhang, W. Zhang, X. Zheng, S. Zhou, B. Zhou, X. Ahmad, H. Akinwumi, S.A. Albery, G.F. Alhowimel, A. Ali, J. Alshehri, M. Alsuhaibani, M. Anikin, A. Azubuike, S.O. Bach-Mortensen, A. Baltiansky, L. Bartas, M. Belachew, K.Y. Bhardwaj, V. Binder, K. Bland, N.S. Boah, M. Bullen, B. Calabrò, G.E. Callahan, T.J. Cao, B. Chalmers, K. Chang, W. Che, Z. Chen, A.T.Y. Chen, H. Chen, H. Chen, Y. Chen, Z. Choi, Y. Chowdhury, M.A.K. Christensen, M.R. Cooke, R.S.C. Cottini, M. Covington, N.V. Cunningham, C. Delarocque, J. Devos, L. Dhar, A.R. Ding, K.-F. Dong, K. Dong, Z. Dreyer, N. Ekstrand, C. Fardet, T. Feleke, B.E. Feurer, T. Freitas, A. Gao, T. Gebremedhin Giganti, F. Grabowski, P. Guerra-Mora, J.R. Guo, C. Guo, X. Gupta, H. He, S. Heijne, M. Heinemann, S. Hogrebe, A. Huang, Z. Iskander-Rizk, S. Iyer, L.M. Jahan, Y. James, A.S. Joel, E. Joffroy, B. Jégousse, C. Kambondo, G. Karnati, P. Kaya, C. Ke, A. Kelly, D. Kickert, R. Kidibule, P.E. Kieselmann, J.P. Kim, H.J. Kitazawa, T. Lamberts, A. Li, Y. Liang, H. Linn, S.N. Litfin, T. Liusuo, W. Lygirou, V. Mahato, A.K. Mai, Z.-M. Major, R.W. Mali, S. Mallis, P. Mao, W. Marvin-Dowle, K. Mason, L.D. Merideth, B. Merino-Plaza, M.J. Merlaen, B. Messina, R. Mishra, A.K. Muhammad, J. Musinguzi, C. Nanou, A. Naqash, A. Nguyen, J.T. Nguyen, T.T.H. Ni, D. Nida Notcovich, S. Ohst, B. Ollivier, Q.R. Osses, D.F. Peng, X. Plantinga, A. Pulia, M. Rafiq, M. Raman, A. Raucher-Chéné Rawski, R. Ray, A. Razak, L.A. Rudolf, K. Rusch, P. Sadoine, M.L. Schmidt, A. Schurr, R. Searles, S. Sharma, S. Sheehan, B. Shi, C. Shohayeb, B. Sommerlad, A. Strehlow, J. Sun, X. Sundar, R. Taherzadeh, G. Tahir, N.D.M. Tang, J. Testa, J. Tian, Z. Tingting, Q. Verheijen, G.P. Vickstrom, C. Wang, T. Wang, X. Wang, Z. Wei, P. Wilson, A. Wyart Yassine, A.-A. Yousefzadeh, A. Zare, A. Zeng, Z. Zhang, C. Zhang, H. Zhang, L. Zhang, T. Zhang, W. Zhang, Z. Zhou, J. Zhu, D. Adamo, V. Adeyemo, A.A. Aggelidou, M. Al-Owaifeer, A.M. Al-Riyami, A.Z. Alzghari, S.K. Andersen, V. Angus, K. Asaduzzaman, M. Asady, H. Ato, D. Bai, X. Baines, R.L. Ballantyne, M. Ban, B. Beck, J. Ben-Nafa, W. Black, E. Blancher, A. Blankstein, R. Bodagh, N. Borges, P. Brooks, A. Brox-Ponce, J. Brunetti, A. Canham, C.D. Carninci, P. Carvajal, R. Chang, S.C. Chao, J. Chatterjee, P. Chen, H. Chen, L. Chen, Y.-C. Chhatriwalla, A.K. Chikowe, I. Chuang, T.-J. Collevatti, R.G. Cornejo, D.A.V. Cuenda, A. Dao, M. Dauga, D. Deng, Z. Devkota, K. Doan, L.V. Elewa, Y.H.A. Fan, D. Faruk, M. Feifei, S. Ferguson, T.S. Fleres, F. Foster, E.J. Foster, S. Furer, T. Gao, Y. Garcia-Rivera, E.J. Gazdar, A. George, R.B. Ghosh, S. Gianchecchi, E. Gleason, J.M. Hackshaw, A. Hall, A. Hall, R. Harper, P. Hogg, W.E. Huang, G. Hunter, K.E. Ijzerman, A.P. Jesus, C. Jian, G. Lewis, J.S., Jr. Kanj, S.S. Kaur, H. Kelly, S. Kheir, F. Kichatova, V.S. Kiyani, M. Klein, R. Kovesi, T. Kraschnewski, J.L. Kumar, A.P. Labutin, D. Lazo-Langner, A. Leclercq, G. Li, M. Li, Q. Li, T. Li, Y. Liao, W.-T. Liao, Z.-Y. Lin, J. Lizer, J. Lobreglio, G. Lowies, C. Lu, C. Majeed, H. Martin, A. Martinez-Sobrido, L. Meresh, E. Middelveen, M. Mohebbi, A. Mota, J. Mozaheb, Z. Muyaya, L. Nandhakumar, A. Ng, S.H.X. Obeidat, M. Oh, D.-H. Owais, M. Pace-Asciak, P. Panwar, A. Park, C. Patterson, C. Penagos-Tabaree, F. Pianosi, P.T. Pinzi, V. Pridans, C. Psaroulaki, A. Pujala, R.K. Pulido-Arjona, L. Qi, P.-F. Rahman, P. Rai, N.K. Rassaf, T. Refardt, J. Ricciardi, W. Riess, O. Rovas, A. Sacks, F.M. Saleh, S. Sampson, C. Schmutz, A. Sepanski, R. Sharma, N. Singh, M. Spearman, P. Subramaniapillai, M. Swali, R. Tan, C.M. Tellechea, J.I. Thomas, L.-M. Tong, X. Vavvas, D.G. Veys, R. Vitriol, V. Wang, H.-D. Wang, J. Wang, J. Waugh, J. Webb, S.A. Williams, B.A. Workman, A.D. Xiang, T. Xie, L.-X. Xu, J. Xu, T. Yang, C. Yoon, J.G. Yuan, C.M. Zaritsky, A. Zhang, Y. Zhao, H. Zuckerman, H. Lyu, R. Pullan, W. RELISH Consortium

Abstract

Document recommendation systems for locating relevant literature have mostly relied on methods developed a decade ago. This is largely due to the lack of a large offline gold-standard benchmark of relevant documents that cover a variety of research fields such that newly developed literature search techniques can be compared, improved and translated into practice. To overcome this bottleneck, we have established the RElevant LIterature SearcH consortium consisting of more than 1500 scientists from 84 countries, who have collectively annotated the relevance of over 180 000 PubMed-listed articles with regard to their respective seed (input) article/s. The majority of annotations were contributed by highly experienced, original authors of the seed articles. The collected data cover 76% of all unique PubMed Medical Subject Headings descriptors. No systematic biases were observed across different experience levels, research fields or time spent on annotations. More importantly, annotations of the same document pairs contributed by different scientists were highly concordant. We further show that the three representative baseline methods used to generate recommended articles for evaluation (Okapi Best Matching 25, Term Frequency-Inverse Document Frequency and PubMed Related Articles) had similar overall performances. Additionally, we found that these methods each tend to produce distinct collections of recommended articles, suggesting that a hybrid method may be required to completely capture all relevant articles. The established database server located at https://relishdb.ict.griffith.edu.au is freely available for the downloading of annotation data and the blind testing of new methods. We expect that this benchmark will be useful for stimulating the development of new powerful techniques for title and title/abstract-based search engines for relevant articles in biomedical science. © The Author(s) 2019. Published by Oxford University Press.

Published
2019

32. Studies in the aklu documents of the Middle Babylonian period

Author

Murai, N., Soldt, W.H. van, Waerzeggers, C., Toorn, K. van der, Eidem, J., Waal, W., Dercksen, J.G., Wiggermann, F.A.M., and Leiden University

Subjects
Akitu, Flour, Middle Babylonian, Beer, Aklu, Kassite, Seal
Abstract

The aklu documents are accounts of the commodities like beer, flour, sheep. But usually we can not find any verb such as "received" or "gave" in them. Therefore the exact meaning of the documents remains to be determined. In this study, I made a profile of the persons appear in the documents according to their seal impressions. By observing the characteristics of the groups of the seal impressions, we can find that artisans prepared the commodities and that the members of a few prominet Akkadian families sealed the documents.

Published
2018

33. Coexisting spin resonance and long-range magnetic order of Eu in EuRbFe4As4

Author

Iida, K., primary, Nagai, Y., additional, Ishida, S., additional, Ishikado, M., additional, Murai, N., additional, Christianson, A. D., additional, Yoshida, H., additional, Inamura, Y., additional, Nakamura, H., additional, Nakao, A., additional, Munakata, K., additional, Kagerbauer, D., additional, Eisterer, M., additional, Kawashima, K., additional, Yoshida, Y., additional, Eisaki, H., additional, and Iyo, A., additional

Published
2019
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35. Status report of the chopper spectrometer 4SEASONS

Author

Kajimoto, R, primary, Nakamura, M, additional, Inamura, Y, additional, Kamazawa, K, additional, Ikeuchi, K, additional, Iida, K, additional, Ishikado, M, additional, Murai, N, additional, Kira, H, additional, Nakatani, T, additional, Ohira-Kawamura, S, additional, Takahashi, R, additional, Kubo, N, additional, Kambara, W, additional, Nakajima, K, additional, and Aizawa, K, additional

Published
2018
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38. An Active Microvibration Isolation System for Hi-tech Manufacturing Facilities

Author

Yoshioka, H., Takahashi, Y., Katayama, K., Imazawa, T., and Murai, N.

Subjects
Piezoelectric devices -- Testing, Actuators -- Testing, Damping (Mechanics) -- Methods, Science and technology
Abstract

This paper presents an active microvibration isolation system using voice-coil linear motors, and pneumatic and piezoelectric actuators. This system is designed to reduce microvibration of the six degrees-of-freedom associated with the rigid body modes of the vibration isolation table by feeding back the pseudo absolute displacement and velocity of the table. To improve vibration isolation performance, a feed-forward control link is added to the sway components in each dimension. This system can also control bending modes of the table in the frequency range up to 200 Hz by employing a proposed Virtual Tuned-Mass Damper control strategy, which is a type of the pole assignment method. In this approach, the pole locations are chosen by a genetic algorithm. For ambient microvibration of the floor around 0.5 cm/[s.sup.2] and for small earthquakes of around 8 cm/[s.sup.2] a reduction by a factor of 100 was achieved in the acceleration of the vibration isolation table. Moreover, the vibration of the isolation table was decreased over the entire frequency range. This system also showed good vibration control performance when an impact excitation was applied directly to the table; vibration was damped out within about 0.1 sec. Additionally, the resole amplitudes around the bending modes of the table were reduced from 1/5 to 1/15 by the Virtual Tuned-Mass Damper method. [DOI: 10.1115/1.1350566]

Published
2001

49. Effect of magnetism on lattice dynamics in SrFe2As2 using high-resolution inelastic x-ray scattering.

Author

Murai, N., Fukuda, T., Kobayashi, T., Nakajima, M., Uchiyama, H., Ishikawa, D., Tsutsui, S., Nakamura, H., Machida, M., Miyasaka, S., Tajima, S., and Baron, A. Q. R.

Subjects
*STRONTIUM compounds, *MAGNETISM, *LATTICE dynamics, *INELASTIC scattering, *X-ray scattering, *PHONON spectra
Abstract

Phonon spectra of detwinned SrFe2 As2 crystals, as measured by inelastic x-ray scattering, show clear anisotropy accompanying the magnetostructural transition at 200 K. We model the mode splitting using magnetic DFT calculations, including a phenomenological reduction in force-constant anisotropy that can be attributed to magnetic fluctuations. This serves as a starting point for a general model of phonons in this material applicable to both the antiferromagnetically ordered phase and the paramagnetic phase. Using this model, the measured splitting in the magnetic phase below TN, and the measured phonon linewidth, we set a lower bound on the mean magnetic fluctuation frequency above TN at 210 K. [ABSTRACT FROM AUTHOR]

Published
2016
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50. Active mover using air-spring and MLRB

Author

Takeda, S, Kudo, K, Akiyama, A, Matsumoto, H, Shintake, T, Yoshioka, M, Takeuchi, Y, Kanazawa, Y, Murai, N, Imazawa, T, and Yasuda, M

Subjects
Engineering
Published
1997

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