High-pressure growth of Ca2-xNaxCuO2Cl2 single crystals and pressure effect on superconductivity

被引：2
|
作者：
Yu, Runze [1 ]
Liu, Qingqing [1 ]
Zhang, Sijia [1 ]
Wang, Xiancheng [1 ]
Han, Wei [1 ]
Jin, Changqing [1 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2012年 / 478卷
关键词：
Ca2-xNaxCuO2Cl2; Single crystals; Pressure effect; HIGH-TC SUPERCONDUCTORS; COMPOUND SYSTEM; CA2CUO2CL2; GPA; (SR; CA)(3)CU2O4+DELTA-CL2-Y; TEMPERATURE; DEPENDENCE; STATE;
D O I：
10.1016/j.physc.2012.03.028
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Single crystals of cuprate oxychloride superconductor Ca-2 xNaxCuO2Cl2 (Na-CCOC) with a systematic variant T-c as a function of Na content are synthesized under high pressure and high temperature. The pressure effect on the superconducting transition temperature in Na-CCOC single crystal is investigated by electrical resistance measurements up to 6.5 GPa. It is found that the T-c decreases almost linearly with increasing pressure, exhibiting a negative pressure shift, which is totally different pressure behavior from that of isostructural (La, Sr)2CuO(4) and other cuprate superconductors. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：29 / 31
页数：3
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