SADDLE-POINT IN ENERGY-SPECTRUM AND INTRABAND MAGNETIC BREAKDOWN IN SEMICONDUCTING BISMUTH ANTIMONY ALLOYS UNDER STRONG UNIAXIAL PRESSURE

被引：1

作者：

MININA, NY

LAVRENYOUK, MY

SAVIN, AM

机构：

[1] Dept. of Low Temp. and Supercond. Phys., Moscow State Univ.

来源：

SEMICONDUCTOR SCIENCE AND TECHNOLOGY | 1991年 / 6卷 / 06期

关键词：

Semiconducting Bismuth Compounds;

D O I：

10.1088/0268-1242/6/6/014

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In single-crystal Bi1-xSb(x) alloys (0.2 < X < 0.22) a semiconductor-metal transition under strong uniaxial compression up to 0.3% along the bisector axis has been observed and the Fermi surface (FS) appearing under deformation has been investigated. With the Fermi energy increasing the coalescence of two isolated electron pockets into a dumbbell-shaped FS (electronic topological transition) is observed. The data confirm the assumption that a saddle point should arise in the energy spectrum of Bi1-xSb(x) alloys at X > 0.15. In the vicinity of the dumbbell-shaped FS formation the intraband magnetic breakdown has been observed.

引用

页码：491 / 495

页数：5

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