Effect of pressure on crystal structure and superconductivity of NbSexTe2-x (x=2, 1.5)

被引：4
|
作者：
Mkrtchyan, Vahe
Kumar, Ravhi
White, Melanie
Yanxon, Howard
Cornelius, Andrew
机构：
[1] Univ Nevada Las Vegas, High Pressure Sci & Engn Ctr, Las Vegas, NV 89154 USA
[2] Univ Nevada Las Vegas, Dept Phys & Astron, Las Vegas, NV 89154 USA
来源：
CHEMICAL PHYSICS LETTERS | 2018年 / 692卷
关键词：
D O I：
10.1016/j.cplett.2017.12.042
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The high pressure structural and transport behaviors of transition metal dichalchogenides NbSexTe2-x (x = 2, 1.5) were investigated using powder X-ray diffraction and resistivity measurements. The structural results show all these title compounds remain stable under application of pressure up to 39 GPa. The lattice compressibilites were determined and show highly anisotropic behavior. A change in superconducting transition temperature dependent on composition was observed. The resistivity measurements performed under pressure for NbSe1.5Te0.5 revealed strong enhancement in transition temperature with T-c increasing from 3.35 K at ambient, to 4.4 K at 1.8 GPa, at a rate of 0.6 K/GPa. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：249 / 252
页数：4
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