Calculated de Haas-van Alphen data and plasma frequencies of MgB2 and TaB2

被引：17

作者：

Elgazzar, S

Oppeneer, PM

Drechsler, SL

Hayn, R

Rosner, H

机构：

[1] Inst Festkorper & Werkstofforschung, D-01171 Dresden, Germany

[2] Menoufia Univ, Fac Sci, Dept Phys, Shibin Al Kawm, Egypt

[3] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

来源：

SOLID STATE COMMUNICATIONS | 2002年 / 121卷 / 2-3期

关键词：

superconductors; band structure; spin-orbit effects;

D O I：

10.1016/S0038-1098(01)00460-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The de Haas-van Alphen frequencies as well as the effective masses for a magnetic field parallel to the crystallographic The de Haas-van Alphen frequencies ss well as the effective masses for a magnetic field parallel to the crystallographic (c) over right arrow direction are calculated within the local spin density approximation for MgB2 and TaB2 In addition, we analyze the plasma frequencies computed for each Fermi surface sheet. We find a large anisotropy of Fermi velocities in MgB2 in contrast to the nearly isotropic behavior in TaB2 (C) 2002 Elsevier Science Ltd. All rights reserved. direction are calculated within the local spin density approximation for MgB2 and TaB2 In addition, we analyze the plasma frequencies computed for each Fermi surface sheet. We find a large anisotropy of Fermi velocities in MgB2 in contrast to the nearly isotropic behavior in TaB2. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：99 / 102

页数：4

共 16 条

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An, J.M., 2001, American Institute of Physics Inc. (86)

[2]

FUCHS G, 2001, STUDIES HIGH TEMPERA, V41

[3] Electron transport in diborides:: Observation of superconductivity in ZrB2 [J].