PRESSURE-INDUCED SUPERCONDUCTIVITY AND PHASE-TRANSITION IN SELENIUM AND TELLURIUM

被引：90

作者：

AKAHAMA, Y

KOBAYASHI, M

KAWAMURA, H

机构：

[1] Department of Material Science Faculty of Science, Himeji Institute of Technology 1479-1 Kanaji, Hyogo, 678-12, Kamigohri

来源：

SOLID STATE COMMUNICATIONS | 1992年 / 84卷 / 08期

关键词：

D O I：

10.1016/0038-1098(92)90093-O

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The pressure dependences of the electrical resistance and the superconducting transition temperature, T(c), in Se and Te have been measured up to 57 GPa and 42 GPa, respectively. A semiconductor-metal transition of Se and Te, which occurred at 23 GPa and 4 GPa, respectively, corresponded to the structural transition to monoclinic phase. The pressure dependence of T(c) of Se showed an anomaly at about 36 GPa, corresponding to a structural transition from monoclinic to orthorhombic phase. The T(c) of monoclinic-Se was 5.6 K at 26 GPa and independent of pressure. The T(c) of Te exhibited a significant enhancement at 35 GPa, which resulted from the structural transition from beta-Po type to bcc phase, and reached a maximum value of 7.4 K.

引用

页码：803 / 806

页数：4

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