Conventional electronic structure of MgB2 and ZrB2: LDA vs. de haas-v. alphen & ARPES data
In: International Conference on Physics and Chemistry of Molecular and Oxide Superconductors, MOS2002. Part IIJournal of low temperature physics 131(5-6):1175-1180; Jg. 131 (2003) 5-6, S. 1175-1180
Online
Konferenz
- print, 26 ref
Zugriff:
We compare full potential LDA band calculations of the Fermi surfaces areas and band masses of MgB2 and ZrB2 previously reported 1,3-5 and new dHvA data. Discrepancies in areas in MgB2 can be removed by a small shift of σ bands relative to π bands. Comparison of effective masses lead to orbit averaged el-ph coupling constants λσ=1.3 and λπ=0.5, whereas for ZrB2 only weak el-ph coupling with λ < 0.3 is found. The ARPES data6 can be also well described by the LDA showing the presence of surface states.
Titel: |
Conventional electronic structure of MgB2 and ZrB2: LDA vs. de haas-v. alphen & ARPES data
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Autor/in / Beteiligte Person: | DRECHSLER, S.-L ; ROSNER, H ; AN, J. M ; PICKETT, W. E ; SERVEDIO, V. D. P ; MISHONOV, T ; FORZANI, E ; WINZER, K |
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Quelle: | International Conference on Physics and Chemistry of Molecular and Oxide Superconductors, MOS2002. Part IIJournal of low temperature physics 131(5-6):1175-1180; Jg. 131 (2003) 5-6, S. 1175-1180 |
Veröffentlichung: | Heidelberg: Springer, 2003 |
Medientyp: | Konferenz |
Umfang: | print, 26 ref |
ISSN: | 0022-2291 (print) |
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