Electron-Phonon Coupling in Anion Metallic Solids and Superconducting MgB2
YIN Dao-Le, YANG Fan, QI Zhi, HAN Ru-Shan
Department of Physics, Peking University, Beijing 100871
Electron-Phonon Coupling in Anion Metallic Solids and Superconducting MgB2
YIN Dao-Le;YANG Fan;QI Zhi;HAN Ru-Shan
Department of Physics, Peking University, Beijing 100871
关键词 ：
74.20.Fg ,
74.70.Ad ,
74.25.Jb
Abstract ： We analyse the Hopfield factor of the newly found superconductor MgB2 using the linear muffin-tin orbital method. Based on a uniform transferred charge density model raised, it is shown from our calculation that the high difference of electronegativity between boron and magnesium favours the high l (l+1) angular momentum hybridization and then the Hopfield factor. Our analysis is consistent with experimental results. Comparison with the cuprate superconductors are also discussed.
Key words ：
74.20.Fg
74.70.Ad
74.25.Jb
出版日期: 2002-08-01
:
74.20.Fg
(BCS theory and its development)
74.70.Ad
(Metals; alloys and binary compounds)
74.25.Jb
(Electronic structure (photoemission, etc.))
引用本文:
YIN Dao-Le;YANG Fan;QI Zhi;HAN Ru-Shan. Electron-Phonon Coupling in Anion Metallic Solids and Superconducting MgB2 [J]. 中国物理快报, 2002, 19(8): 1176-1178.
2 . Chin. Phys. Lett., 2002, 19(8): 1176-1178.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2002/V19/I8/1176
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