UNUSUAL HOLE DEPENDENCE OF T(C) IN HGBA2CUO4+DELTA

被引：63

作者：

XIONG, Q ^{[1
]}

XUE, YY ^{[1
]}

CAO, Y ^{[1
]}

CHEN, F ^{[1
]}

SUN, YY ^{[1
]}

GIBSON, J ^{[1
]}

CHU, CW ^{[1
]}

LIU, LM ^{[1
]}

JACOBSON, A ^{[1
]}

机构：

[1] UNIV HOUSTON,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.50.10346

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The anion doping effect on the superconducting transition temperature (T(c)) of HgBa2CuO4+delta has been determined with a wide T(c) variation. We found a parabolic variation of T(c) with delta over the entire range of superconductivity. Remarkably, the dependence of T(c) on p (the number of holes per CuO2) has richer features: for delta less-than-or-equal-to 0.28, T(c) is parabolic in p, but with an unusual prefactor and p = 0.728, giving significantly less than two holes per oxygen; and for delta > 0.28, a drastic departure from the parabolic T(c)(p) occurs. Implications for the occurrence of superconductivity in this material are discussed.

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页码：10346 / 10349

页数：4

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