PRESSURE EFFECT ON THE SUPERCONDUCTING TRANSITION-TEMPERATURE OF TL2CAN-1BA2CUNO2N+4-DELTA

被引：38

作者：

LIN, JG ^{[1
]}

MATSUISHI, K ^{[1
]}

WANG, YQ ^{[1
]}

XUE, YY ^{[1
]}

HOR, PH ^{[1
]}

CHU, CW ^{[1
]}

机构：

[1] UNIV HOUSTON,DEPT PHYS,HOUSTON,TX 77204

来源：

PHYSICA C | 1991年 / 175卷 / 5-6期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

D O I：

10.1016/0921-4534(91)90276-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The pressure effect on the superconducting transition temperature (dT(c)/dP) has been examined for the hole-high temperature superconductors (HTSCs) Tl2Ca(n-1)Ba2Cu(n)O2n+4 for n = 1, 2, and 3. A negative dT(c)/dP was observed in this family of HTSCs with n = 1, in strong contrast to other hole-HTSCs, raising a question concerning the charge asymmetry in HTSCs previously proposed. By examining all existing alpha(= dT(c)/T(c)dP)-results, it was found that hole-HTSCs and electron-HTSCs fall into two distinct regions in the alpha-T(c) plot. A universal alpha-T(c) behavior also emerges for the hole-HTSCs. The implications of these observations are discussed.

引用

页码：627 / 633

页数：7

共 42 条

[1] STRONG PRESSURE-DEPENDENCE OF TC OF THE NEW 80-K PHASE YBA2CU4O8+X [J].