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1,086 results on '"Azuma, N."'

1. Spintronic superconductor in a bulk layered material with natural spin-valve structure

Author

Sakuragi, Shunsuke, Sasaki, S., Akashi, R., Sakagami, R., Kuroda, K., Bareille, C., Hashimoto, T., Nagashima, T., Kinoshita, Y., Hirata, Y., Shimozawa, M., Asai, S., Yajima, T., Doi, S., Tsujimoto, N., Kunisada, S., Noguchi, R., Kurokawa, K., Azuma, N., Hirata, K., Yamasaki, Y., Nakao, H., Kim, T. K., Cacho, C., Masuda, T., Tokunaga, M., Wadati, H., Okazaki, K., Shin, S., Kamihara, Y., Yamashita, Minoru, and Kondo, Takeshi

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

Multi-layered materials provide fascinating platforms to realize various functional properties, possibly leading to future electronic devices controlled by external fields. In particular, layered magnets coupled with conducting layers have been extensively studied recently for possible control of their transport properties via the spin structure. Successful control of quantum-transport properties in the materials with antiferromagnetic (AFM) layers, so-called natural spin-valve structure, has been reported for the Dirac Fermion and topological/axion materials. However, a bulk crystal in which magnetic and superconducting layers are alternately stacked has not been realized until now, and the search for functional properties in it is an interesting yet unexplored field in material science. Here, we discover superconductivity providing such an ideal platform in EuSn2As2 with the van der Waals stacking of magnetic Eu layers and superconducting Sn-As layers, and present the first demonstration of a natural spin-valve effect on the superconducting current. Below the superconducting transition temperature (Tc), the electrical resistivity becomes zero in the in-plane direction. In contrast, it, surprisingly, remains finite down to the lowest temperature in the out-of-plane direction, mostly due to the structure of intrinsic magnetic Josephson junctions in EuSn2As2. The magnetic order of the Eu layers (or natural spin-valve) is observed to be extremely soft, allowing one to easy control of the out-of-plane to in-plane resistivities ratio from 1 to infinity by weak external magnetic fields. The concept of multi-functional materials with stacked magnetic-superconducting layers will open a new pathway to develop novel spintronic devices with magnetically controllable superconductivity., Comment: 17 pages, 4 figures

Published
2020

2. POS1251 ORAL HEALTH-RELATED QUALITY OF LIFE IN SJÖGREN’S SYNDROME PATIENTS WITH UNSTIMULATED WHOLE SALIVARY FLOWS ≥0.1 ML/MIN FOR WHOM NO THERAPEUTIC APPROACHES ARE PROVIDED IN THE EULAR RECOMMENDATIONS

Author

Azuma, N., primary, Iwatani, M., additional, Yokoyama, Y., additional, Hashimoto, N., additional, Tamura, M., additional, Hashimoto, T., additional, Morimoto, M., additional, Nishioka, A., additional, Kitano, M., additional, Tsunoda, S., additional, Sano, H., additional, and Matsui, K., additional

Published
2024
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5. Safety and efficacy of oral semaglutide versus dulaglutide in Japanese patients with type 2 diabetes (PIONEER 10): an open-label, randomised, active-controlled, phase 3a trial

Author

Arisaka, T, Asakura, T, Azuma, N, Fukuda, S, Fukushima, Y, Harada, N, Inoue, S, Ishida, H, Ishii, H, Ishikawa, S, Jinnouchi, H, Kaneko, S, Kanno, K, Kato, M, Kato, Y, Kawada, T, Kim, H, Kiyosue, A, Matsuoka, O, Miho, O, Nakamoto, S, Nakamura, S, Nakanishi, S, Nishimura, H, Numata, A, Ohama, T, Okabe, T, Okuguchi, F, Osonoi, T, Sasaki, T, Seino, H, Shin, K, Shiraiwa, T, Sugiura, T, Wada, S, Yamauchi, A, Yabe, Daisuke, Nakamura, Jiro, Kaneto, Hideaki, Deenadayalan, Srikanth, Navarria, Andrea, Gislum, Mette, and Inagaki, Nobuya

Published
2020
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13. Corrigendum to 'Global Vascular Guidelines on the Management of Chronic Limb-Threatening Ischaemia' [Eur J Vasc Endovasc Surg 58 (1S) (2019) 1–109>] (European Journal of Vascular & Endovascular Surgery (2019) 58(1S) (S1–S109.e33), (S1078588419303806), (10.1016/j.ejvs.2019.05.006))

Author

Conte M. S., Bradbury A. W., Kolh P., White J. V., Dick F., Fitridge R., Mills J. L., Ricco J. -B., Suresh K. R., Murad M. H., Aboyans V., Aksoy M., Alexandrescu V. -A., Armstrong D., Azuma N., Belch J., Bergoeing M., Bjorck M., Chakfe N., Cheng S., Dawson J., Debus E. S., Dueck A., Duval S., Eckstein H. H., Ferraresi R., Gambhir R., Gargiulo M., Geraghty P., Goode S., Gray B., Guo W., Gupta P. C., Hinchliffe R., Jetty P., Komori K., Lavery L., Liang W., Lookstein R., Menard M., Misra S., Miyata T., Moneta G., Munoa Prado J. A., Munoz A., Paolini J. E., Patel M., Pomposelli F., Powell R., Robless P., Rogers L., Schanzer A., Schneider P., Taylor S., De Ceniga M. V., Veller M., Vermassen F., Wang J., Wang S., Conte M.S., Bradbury A.W., Kolh P., White J.V., Dick F., Fitridge R., Mills J.L., Ricco J.-B., Suresh K.R., Murad M.H., Aboyans V., Aksoy M., Alexandrescu V.-A., Armstrong D., Azuma N., Belch J., Bergoeing M., Bjorck M., Chakfe N., Cheng S., Dawson J., Debus E.S., Dueck A., Duval S., Eckstein H.H., Ferraresi R., Gambhir R., Gargiulo M., Geraghty P., Goode S., Gray B., Guo W., Gupta P.C., Hinchliffe R., Jetty P., Komori K., Lavery L., Liang W., Lookstein R., Menard M., Misra S., Miyata T., Moneta G., Munoa Prado J.A., Munoz A., Paolini J.E., Patel M., Pomposelli F., Powell R., Robless P., Rogers L., Schanzer A., Schneider P., Taylor S., De Ceniga M.V., Veller M., Vermassen F., Wang J., and Wang S.

Subjects
Global Vascular Guidelines, Management, Chronic Limb-Threatening Ischaemia
Abstract

The authors regret that the name of one of the co-author has been incorrectly spelt. Dr. Mauro Garguilo should have been spelt as “Mauro Gargiulo”. The authors would like to apologise for any inconvenience caused.

Published
2020

18. Honedra® (CLBS12) autologous CD34+ cells improve outcomes in patients with Buerger’s disease

Author

Kawamoto, A., primary, Furukawa, Y., additional, Fujita, Y., additional, Kobayashi, S., additional, Tobita, K., additional, Yamaguchi, J., additional, Shimizu, W., additional, Takagi, G., additional, Matsumura, H., additional, Murata, N., additional, Nakamura, M., additional, Kitano, I., additional, Yokoi, H., additional, Azuma, N., additional, Kozuki, A., additional, Obara, H., additional, Furukawa, M., additional, Sietsema, W.K., additional, Takagi, H., additional, Wang, J., additional, Bartel, R., additional, and Losordo, D.W., additional

Published
2021
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22. The upper 2121 m at EastGRIP - Results from physical properties of NEGIS

Author

Stoll, Nicolas, Weikusat, Ilka, Kerch, Johanna, Eichler, Jan, Shigeyama, Wataru, Homma, Tomoyuki, Jansen, Daniela, Franke, Steven, Kuiper, Ernst-Jan, Wallis, David, Westhoff, Julien, Saruya, Tomotaka, Faria, S. H., Kipfstuhl, Sepp, Goto-Azuma, K., Azuma, N., Dahl-Jensen, D., Stoll, Nicolas, Weikusat, Ilka, Kerch, Johanna, Eichler, Jan, Shigeyama, Wataru, Homma, Tomoyuki, Jansen, Daniela, Franke, Steven, Kuiper, Ernst-Jan, Wallis, David, Westhoff, Julien, Saruya, Tomotaka, Faria, S. H., Kipfstuhl, Sepp, Goto-Azuma, K., Azuma, N., and Dahl-Jensen, D.

Abstract

Here we present the ice microstructure and CPO (c-axes fabric) data from the upper 2121 m of the EastGRIP ice core, an on-going deep drilling project on the North East Greenland Ice Stream. Understanding ice flow behaviour of fast flowing ice streams is crucial for accurate projections of future global sea level rise, but is still poorly understood due to e.g. missing observational fabric data from ice streams. The presented CPO patterns found at EastGRIP show (1) a rapid evolution of c-axes anisotropy compared to deep ice cores from less dynamic sites, (2) a CPO evolution towards a strong vertical girdle and (3) CPO patterns that have not previously been directly observed in ice. Furthermore, data regarding grain properties (e.g. grain size) and indications of dynamic recrystallization, already at shallow depths, are presented. The ice CPO shows a clear evolution with depth. In the first measurements at 111 m depth a broad single maximum distribution is observed, which transforms into a crossed girdle CPO (196-294 m). With increasing depth, an evolution towards a vertical girdle c-axes distribution occurs. Below 1150 m the CPO evolves into a vertical girdle with a higher density of c-axes oriented horizontally, a novel CPO in ice. These CPO patterns indicate a depth-related change in deformation modes, from vertical compression to extensional deformation along flow. Grain size values are similar to results from other Greenlandic deep ice cores. Grain size evolution is characterized by an increase until 500 m depth, a decrease until 1360 m depth and mainly constant values in the Glacial. These findings are accompanied by indications of an early onset of dynamic recrystallisation e.g. irregular grain shapes, protruding grains and island grains. The presented high-resolution data enable, for the very first time, a detailed and data- based look into a fast-flowing ice stream and are an important step towards a better understanding of the rheology of ice and its flow be

Published
2020

24. Eemian interglacial reconstructed from a Greenland folded ice core

Author

Dahl-Jensen, D., Albert, M. R., Aldahan, A., Azuma, N., Balslev-Clausen, D., Baumgartner, M., Berggren, A.-M., Bigler, M., Binder, T., Blunier, T., Bourgeois, J. C., Brook, E. J., Buchardt, S. L., Buizert, C., Capron, E., Chappellaz, J., Chung, J., Clausen, H. B., Cvijanovic, I., Davies, S. M., Ditlevsen, P., Eicher, O., Fischer, H., Fisher, D. A., Fleet, L. G., Gfeller, G., Gkinis, V., Gogineni, S., Goto-Azuma, K., Grinsted, A., Gudlaugsdottir, H., Guillevic, M., Hansen, S. B., Hansson, M., Hirabayashi, M., Hong, S., Hur, S. D., Huybrechts, P., Hvidberg, C. S., Iizuka, Y., Jenk, T., Johnsen, S. J., Jones, T. R., Jouzel, J., Karlsson, N. B., Kawamura, K., Keegan, K., Kettner, E., Kipfstuhl, S., Kjær, H. A., Koutnik, M., Kuramoto, T., Köhler, P., Laepple, T., Landais, A., Langen, P. L., Larsen, L. B., Leuenberger, D., Leuenberger, M., Leuschen, C., Li, J., Lipenkov, V., Martinerie, P., Maselli, O. J., Masson-Delmotte, V., McConnell, J. R., Miller, H., Mini, O., Miyamoto, A., Montagnat-Rentier, M., Mulvaney, R., Muscheler, R., Orsi, A. J., Paden, J., Panton, C., Pattyn, F., Petit, J.-R., Pol, K., Popp, T., Possnert, G., Prié, F., Prokopiou, M., Quiquet, A., Rasmussen, S. O., Raynaud, D., Ren, J., Reutenauer, C., Ritz, C., Röckmann, T., Rosen, J. L., Rubino, M., Rybak, O., Samyn, D., Sapart, C. J., Schilt, A., Schmidt, A. M. Z., Schwander, J., Schüpbach, S., Seierstad, I., Severinghaus, J. P., Sheldon, S., Simonsen, S. B., Sjolte, J., Solgaard, A. M., Sowers, T., Sperlich, P., Steen-Larsen, H. C., Steffen, K., Steffensen, J. P., Steinhage, D., Stocker, T. F., Stowasser, C., Sturevik, A. S., Sturges, W. T., Sveinbjörnsdottir, A., Svensson, A., Tison, J.-L., Uetake, J., Vallelonga, P., van de Wal, R. S. W., van der Wel, G., Vaughn, B. H., Vinther, B., Waddington, E., Wegner, A., Weikusat, I., White, J. W. C., Wilhelms, F., Winstrup, M., Witrant, E., Wolff, E. W., Xiao, C., and Zheng, J.

Published
2013
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27. Magnetic semiconductor: structural, magnetic, and conducting properties of the salts of the 6-oxoverdazyl radical cation with M(dmit) (sub)2 anions (M= Ni, Zn, Pd, and Pt, dmit= 1,3-dithiol-2-thione-4,5-dithiolate)

Author

Mukai, K., Hatanaka, T., Senba, N., Nakayashiki, T., Tanaka, K., Ueda, K., Sugimoto, T., and Azuma, N.

Subjects
Chemistry, Inorganic -- Research, Salts, Radicals (Chemistry), Cations, Nickel, Zinc, Palladium, Platinum, Coordination compounds, Anions, Chemistry
Abstract

Research has been conducted on the molecular magnetic semiconductors. The results of the experiment demonstrate that these semiconductors consist of the open-shell verdazyl radical cation donor and metal complex anion acceptor.

Published
2002

28. Anomalous magnetic behavior in three kinds of 3-(aryl-substituted)-1,5-diphenylverdazyl radical crystals (p-FPDV, p-PyDV and m-PyDV) induced by frustrated spin interaction

Author

Mukai, K., Matsubara, M., Hisatou, H., Hosokoshi, Y., and Inoue, K.; Azuma, N.

Subjects
Crystals -- Research, Crystals -- Structure, Radicals (Chemistry) -- Research, Radicals (Chemistry) -- Magnetic properties, Chemistry, Physical and theoretical -- Research, Chemistry, Physical and theoretical -- Chemical properties, Chemicals, plastics and rubber industries
Abstract

The magnetic susceptibilities of three kinds of 3-(aryl-substituted)-1,5-diphenylverdazyl radical crystals (4-fluorophenyl (p-FPDV), 4-pyridyl (p-PyDV), and 3-pyridyl (m-PyDV)) are measured between 1.8 and 300 K. The result of the crystal structure analysis of P-FPDV indicates the existence of spin frustration in the system.

Published
2002

32. Safety and efficacy of oral semaglutide versus dulaglutide in Japanese patients with type 2 diabetes (PIONEER 10): an open-label, randomised, active-controlled, phase 3a trial

Author

Yabe, Daisuke, primary, Nakamura, Jiro, additional, Kaneto, Hideaki, additional, Deenadayalan, Srikanth, additional, Navarria, Andrea, additional, Gislum, Mette, additional, Inagaki, Nobuya, additional, Arisaka, T, additional, Asakura, T, additional, Azuma, N, additional, Fukuda, S, additional, Fukushima, Y, additional, Harada, N, additional, Inoue, S, additional, Ishida, H, additional, Ishii, H, additional, Ishikawa, S, additional, Jinnouchi, H, additional, Kaneko, S, additional, Kanno, K, additional, Kato, M, additional, Kato, Y, additional, Kawada, T, additional, Kim, H, additional, Kiyosue, A, additional, Matsuoka, O, additional, Miho, O, additional, Nakamoto, S, additional, Nakamura, S, additional, Nakanishi, S, additional, Nishimura, H, additional, Numata, A, additional, Ohama, T, additional, Okabe, T, additional, Okuguchi, F, additional, Osonoi, T, additional, Sasaki, T, additional, Seino, H, additional, Shin, K, additional, Shiraiwa, T, additional, Sugiura, T, additional, Wada, S, additional, and Yamauchi, A, additional

Published
2020
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35. Basic properties of hydroxyl ammonium nitrate (HAN) based monopropellant for thrusters

Author

Azuma, N., Niboshi, Y., Tomoharu Matsumura, Hori, K., Katsumi, T., Hatai, K., Sugiyama, Y., and Nakayama, Y.

Subjects
hydroxyl ammonium nitrate, large scale gap test, basic properties, thermal decomposition temperature, burning rate
Abstract

形態: カラー図版あり, Physical characteristics: Original contains color illustrations, Funding: This study was partially supported by the "High-Quality Protein Crystal Growth Experiment on JEM" promoted by JAXA (Japan Aerospace Exploration Agency). This work was also supported by a grant from the FPU Promotion of Community Fund, by the Special Coordination Funds for Promoting Science and Technology of the Ministry of Education, Culture, Sports, Science and Technology, Japan and by a Grant-in-Aid for Young Scientists (B) (TI, Grant Number 25850234) and Scientific Research (C) (HK, Grand Number 26450099; TI, Grant Number 16K08114) from the Japan Society for the Promotion of Science. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript., Accepted: 2016-11-02, 資料番号: PA1710027000

Published
2017

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