Electronic structure of MgB2:: X-ray emission and absorption studies -: art. no. 134509

被引：35

作者：

Kurmaev, EZ ^{[1
]}

Lyakhovskaya, II

Kortus, J

Moewes, A

Miyata, N

Demeter, M

Neumann, M

Yanagihara, M

Watanabe, M

Muranaka, T

Akimitsu, J

机构：

[1] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620219, Russia

[2] St Petersburg State Univ, Inst Phys, St Petersburg 198504, Russia

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

[4] Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada

[5] Tohoku Univ, Sci Measurements Res Inst, Sendai, Miyagi 9808577, Japan

[6] Univ Osnabruck, Sekt Phys, D-49069 Osnabruck, Germany

[7] Aoyama Gakuin Univ, Dept Phys, Tokyo 1578572, Japan

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.65.134509

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of x-ray emission and absorption spectra of the constituents of MgB2 are presented. The results obtained are in good agreement with calculated x-ray spectra, with dipole matrix elements taken into account. The comparison of x-ray emission spectra of graphite, AlB2, and MgB2 in the binding energy scale supports the idea of charge transfer from sigma to pi bands, which creates holes at the top of the bonding sigma bands and drives the high-T-c superconductivity in MgB2.

引用

页码：1 / 4

页数：4

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