Galvanomagnetic properties of Bi85Sb15 thin films on different substrates

被引：11

作者：

Komarov, V. A. ^{[1
]}

Suslov, A. V. ^{[1
]}

Suslov, M. V. ^{[1
]}

机构：

[1] Alexander Herzen State Pedag Univ Russia, St Petersburg 191186, Russia

来源：

SEMICONDUCTORS | 2017年 / 51卷 / 06期

关键词：

BISMUTH;

D O I：

10.1134/S1063782617060173

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The results of studying the galvanomagnetic properties of Bi85Sb15 thin films on substrates with various thermal-expansion coefficients are presented. The significant effect of the difference between the thermal expansions of film and substrate materials on the galvanomagnetic properties of the films is revealed. An analysis of the film properties within the two-band model shows that the difference in the properties of films on different substrates is associated with changes in the charge-carrier concentration and mobility. It is shown that a decrease in the thermal-expansion coefficient of the substrate material results in a decrease in the carrier concentration in the film composition under study, which indicates a significant difference in changes in the film band structure in comparison with changes occurring with increasing antimony concentration.

引用

页码：702 / 705

页数：4