PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
|
2007年
/
460卷
关键词:
high-T-c superconductor;
single crystal growth;
high-pressure synthesis;
cation deficiency;
D O I:
10.1016/j.physc.2007.03.106
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
Ca2-xCuO2Cl2 is a single-layer oxychloride superconductor in which A-site cation deficiency works as hole-carrier source. Ca2-xCuO2Cl2 single crystals with T-C of 25 K and 36 K were grown at high pressures of 4 and 5.5 GPa. It was indicated that Ca deficiency x in Ca2-xCuO2Cl2 single crystals are controlled by tuning applied pressures. The applied pressure-dependent hole-carrier content are common in both of Ca2-xCuO2Cl2 and Ca2-xCuO2Cl2. (C) 2007 Elsevier B.V. All rights reserved.