Electron-phonon coupling in anion metallic solids and superconducting MgB2

被引：0
|
作者：
Yin, DL [1 ]
Yang, F [1 ]
Qi, Z [1 ]
Han, RS [1 ]
机构：
[1] Peking Univ, Dept Phys, Beijing 100871, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2002年 / 19卷 / 08期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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. Comparisons with cuprate superconductors are also discussed.
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页码：1176 / 1178
页数：3
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