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12 results on '"Tong, L.-N."'

1. Growth and magnetic properties of epitaxial ultrathin Ni fims on Cu(111) using Sb as a surfactan

Author

Matthes, F., Rzhevskii, A., Tong, L.-N., Venus, D., and Schneider, C.M.

Subjects
Dielectric films -- Magnetic properties, Dielectric films -- Research, Thin films -- Magnetic properties, Thin films -- Research, Epitaxy -- Research, Copper -- Magnetic properties, Copper -- Research, Nickel -- Magnetic properties, Nickel -- Research, Antimony -- Magnetic properties, Antimony -- Research, Physics
Abstract

The growth and magnetism of ultrathin Ni films on the (111) surface of Cu using Sb as a surfactant, in order to stimulate a layer-by-layer (LBL) growth mode, are analyzed. The results indicate that the inverse spin reorientation transition (SRT) of Ni on Cu(111) occurs at a thickness of 7-8 ML and it is also seen that Sb improves the LBL growth in this system.

Published
2003

2. Proximity effects at epitaxial Co/FeMn thin film systems (invited)

Author

Matthes, F., Rzhevskii, A., Tong, L.-N, Malkinski, L., Schneider, C.M., and Celinski, Z

Subjects
Magnetrons -- Research, Manganese -- Magnetic properties, Iron compounds -- Magnetic properties, Cobalt -- Magnetic properties, Physics
Abstract

Co/FeMn system have been concentrating on polycrystalline thin layer structures prepared by magnetron sputtering techniques are discussed. For the 10 ML thick FeMn interlayer we observed a ferromagnetic coupling, while for the 11ML thick FeMn interlayer we detected a strong noncollinear coupling.

Published
2003

3. Spin-polarized photoemission spectroscopy of the MgO/Fe interface on GaAs(100).

Author

Matthes, F., Tong, L.-N., and Schneider, C. M.

Subjects
*ELECTRONICS, *FILMSTRIPS, *PHOTOEMISSION, *SPECTRUM analysis, *PHYSICS
Abstract

We studied the electronic band states at the Fe/MgO interface with spin-polarized photoemission using excitation energies between 35 and 60 eV. Epitaxial Fe films on GaAs(100) were covered with 0.5, 1, and 1.5 ML thick MgO films. The photoemission spectra revealed a spin-dependent attenuation for photoelectrons related to direct transitions from initial bulk Fe bands having minority or majority spin character. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2004
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4. Influence of MgO overlayers on the electronic states of Fe(001) thin films grown on GaAs(001)

Author

Tong, L.-N., Matthes, F., Müller, M., Lee, C.-G., and Schneider, C. M.

Subjects
ddc:530
Abstract

The valence electronic states at the model tunneling junction interface MgO/Fe(001) system were systematically studied by comparing the spin-resolved photoemission spectroscopy of clean Fe(001) and MgO covered MgO/Fe(001) surfaces using linearly p-polarized light. For the clean Fe(001) film on GaAs(001), five distinct features including bulk and surface-related transitions are found. The bulk and surface-state transitions are well-accounted for by the direct transition model based on the calculated energy band structure of bcc bulk Fe(001). The previously observed minority feature at a binding energy E-B=-1.3 eV is reinterpreted as a surface roughness associated transition. Upon the MgO adsorption on Fe(001), the surface-state transitions at E-B=-0.3 eV below Fermi energy E-F appearing in both the majority and minority spin spectra at low photon energy (18 eV to 35 eV) were quenched. This is also the first direct experimental evidence of a minority spin surface state located just below the Fermi energy as predicted previously. The bulk states at the MgO/Fe(001) interface exhibit a layer-dependent modification, i.e., the bulk states in the deeper Fe layer(s) remain unaffected, while the states of Delta(down arrow)(5) band symmetry in the Fe layer(s) closest to the MgO/Fe(001) interface are strongly modified, in contrast to the states of Delta(up arrow)(1) symmetry. As a consequence of this interface effect, the "partial spin polarization" at the Fermi level changes sign from negative to positive values as seen in the spin asymmetry spectra at photon energies of 40 eV and 60 eV. The origin of this spin- and symmetry-dependent modification observed at MgO/Fe(001) interfaces is discussed.

Published
2008

5. Influence of MgO overlayers on the electronic states of bct Co(001) thin film grown on bcc Fe(001)/GaAs(001

Author

Tong, L.-N., Deng, C.-L., Matthes, F., Müller, M., and Schneider, C. M.

Subjects
Condensed Matter::Materials Science, Condensed Matter::Strongly Correlated Electrons, ddc:530
Abstract

The spin polarization of the valence band electronic states of strained bcc Co(001) and MgO/Co(001) thin films grown onto a bcc Fe(001) seed layer on GaAs(001) are investigated by employing spin-resolved photoemission spectroscopy. The experimental results are compared with the calculated energy band structure of bcc and bct Co(001), and discussed in the framework of the interband transition model, which allows one to ascribe the observed spectral features to bands of given spin and spatial symmetry. In contrast to the positive spin polarization observed at the MgO/Fe(001) interface, a large negative spin polarization of the electronic states at the Fermi level is observed for the MgO/Co/Fe/GaAs(001) system. Such a large negative spin polarization is attributed to a change in the energy band structure at the bct Co/bcc Fe(001) interface.

Published
2006

6. Peritoneal dialysis II

Author

Yayar, O., primary, Buyukbakkal, M., additional, Eser, B., additional, Yildirim, T., additional, Ercan, Z., additional, Erdogan, B., additional, Kali, A., additional, Merhametsiz, O., additional, Haspulat, A., additional, Akdag, I., additional, Ayli, M. D., additional, Quach, T., additional, Tregaskis, P., additional, Menahem, S., additional, Koukounaras, J., additional, Mott, N., additional, Walker, R., additional, Zeiler, M., additional, Santarelli, S., additional, Degano, G., additional, Monteburini, T., additional, Agostinelli, R. M., additional, Marinelli, R., additional, Ceraudo, E., additional, Grzelak, T., additional, Kramkowska, M., additional, Walczak, M., additional, Czyzewska, K., additional, Guney, I., additional, Turkmen, K., additional, Yazici, R., additional, Arslan, S., additional, Altintepe, L., additional, Yeksan, M., additional, Vaduva, C., additional, Popa, S., additional, Mota, M., additional, Mota, E., additional, Wan Md Adnan, W. A. H., additional, Zaharan, N. L., additional, Moreiras-Plaza, M., additional, Blanco-Garcia, R., additional, Beato-Coo, L., additional, Cossio-Aranibar, C., additional, Martin-Baez, I., additional, Santos, M. T., additional, Fonseca, I., additional, Santos, O., additional, Aguiar, P., additional, Rocha, M. J., additional, Carvalho, M. J., additional, Cabrita, A., additional, Rodrigues, A., additional, Guo, Z., additional, Lai, X., additional, Theodoridis, M., additional, Panagoutsos, S., additional, Thodis, E., additional, Karanikas, M., additional, Mitrakas, A., additional, Kriki, P., additional, Kantartzi, K., additional, Passadakis, P., additional, Vargemezis, V., additional, Vakilzadeh, N., additional, Pruijm, M., additional, Burnier, M., additional, Halabi, G., additional, Azevedo, P., additional, Carvalho, M., additional, Laplante, S., additional, Rutherford, P., additional, Shutov, E., additional, Isachkina, A., additional, Gorelova, E., additional, Troya, M.-I., additional, Teixido, J., additional, Pedreira, G., additional, Del Rio, M., additional, Romero, R., additional, Bonet, J., additional, Zhang, X., additional, Ma, J., additional, Kim, Y., additional, Kim, J.-K., additional, Song, Y. R., additional, Kim, S. G., additional, Kim, H. J., additional, Eloot, S., additional, Vanholder, R., additional, Van Biesen, W., additional, Heaf, J., additional, Pedersen, C., additional, Elgborn, A., additional, Arabaci, T., additional, Emrem, G., additional, Keles, M., additional, Kizildag, A., additional, Martino, F., additional, Amici, G., additional, Rodighiero, M. P., additional, Crepaldi, C., additional, Ronco, C., additional, Tanaka, H., additional, Tsuneyoshi, S., additional, Yamasaki, K., additional, Daijo, Y., additional, Tatsumoto, N., additional, Al-Hilali, N., additional, Hussain, N., additional, Fathy, V., additional, Negm, H., additional, Alhilali, M., additional, Grzegorzewska, A., additional, Cieszynski, K., additional, Kaczmarek, A., additional, Sowinska, A., additional, Soleymanian, T., additional, Najafi, I., additional, Ganji, M. R., additional, Ahmadi, F., additional, Saddadi, F., additional, Hakemi, M., additional, Amini, M., additional, Tong, L. N. M. N., additional, Yongcheng, H. N. M. N., additional, Qijun, W. N. M. N., additional, Shaodong, L. N. M. N., additional, Velioglu, A., additional, Albaz, M., additional, Arikan, H., additional, Tuglular, S., additional, Ozener, C., additional, Bakirdogen, S., additional, Eren, N., additional, Mehtap, O., additional, Bek, S. G., additional, Cekmen, M. B., additional, Yilmaz, A., additional, Cabana Carcasi, M. L. L., additional, Fernandez Ferreiro, A., additional, Fidalgo Diaz, M., additional, Becerra Mosquera, V., additional, Alonso Valente, R., additional, Buttigieg, J., additional, Borg Cauchi, A., additional, Rogers, M., additional, Buhagiar, L., additional, Farrugia Agius, J., additional, Vella, M. P., additional, Farrugia, E., additional, Han, J. H., additional, Kim, H. R., additional, Ko, K. I., additional, Kim, C. H., additional, Koo, H. M., additional, Doh, F. M., additional, Lee, M. J., additional, Oh, H. J., additional, Han, S. H., additional, Yoo, T.-H., additional, Kang, S.-W., additional, Choi, K. H., additional, Sikorska, D., additional, Frankiewicz, D., additional, Klysz, P., additional, Schwermer, K., additional, Hoppe, K., additional, Nealis, J., additional, Kaczmarek, J., additional, Baum, E., additional, Wanic-Kossowska, M., additional, Pawlaczyk, K., additional, Oko, A., additional, Hiss, M., additional, Gerstein, F., additional, Haller, H., additional, Gueler, F., additional, Fukasawa, M., additional, Manabe, T., additional, Wan, Q., additional, He, Y., additional, Zhu, D., additional, Li, J., additional, Xu, H., additional, Yayar, O., additional, Oztemel, A., additional, Pilcevic, D., additional, Kovacevic, Z., additional, Maksic, D., additional, Paunic, Z., additional, Tadic-Pilcevic, J., additional, Mijuskovic, M., additional, Petrovic, M., additional, Obrencevic, K., additional, Rabrenovic, V., additional, Ignjatovic, L., additional, Terzic, B., additional, Jovanovic, D., additional, Chang, C.-H., additional, Chang, Y.-S., additional, Busuioc, M., additional, Guerraoui, A., additional, Caillette-Beaudoin, A., additional, Bahte, S. K., additional, Kielstein, J. T., additional, Polinder-Bos, H., additional, Emmelot-Vonk, M., additional, and Gaillard, C., additional

Published
2013
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