Superconductivity in MgB2:: A case study of the "flat band-steep band" scenario

被引：16

作者：

Deng, S ^{[1
]}

Simon, A ^{[1
]}

Köhler, J ^{[1
]}

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

JOURNAL OF SUPERCONDUCTIVITY | 2003年 / 16卷 / 03期

关键词：

magnesium diboride; superconductivity; first principles; electron-phonon coupling; flat band-steep band;

D O I：

10.1023/A:1023804600927

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electronic structure of MgB2 is analyzed in terms of the "flat band-steep band" scenario for superconductivity. Good agreement between the Fermi surfaces obtained from de Haas-van Alphen measurements and from TB-LMTO and FP-LMTO calculations was achieved. The decomposed electron-phonon coupling lambda(q) reveals a pronounced peak-like structure along the Gamma-A and Gamma-M directions.

引用

页码：477 / 481

页数：5

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