SUPERCONDUCTIVITY OF OVERDOPED YBA2CU3OX SINGLE-CRYSTALS NEAR X=7

被引：10

作者：

HAUFF, R

BREIT, V

CLAUS, H

HERRMANN, D

KNIERIM, A

SCHWEISS, P

WUHL, H

ERB, A

MULLERVOGT, G

机构：

[1] UNIV KARLSRUHE,FAK PHYS,KRISTALL & MAT LAB,D-76128 KARLSRUHE,GERMANY

[2] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST NUKL FESTKORPERPHYS,D-76021 KARLSRUHE,GERMANY

来源：

PHYSICA C | 1994年 / 235卷

关键词：

D O I：

10.1016/0921-4534(94)92198-9

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetization measurements on high-quality YBa2Cu3Ox single crystals are analyzed according to the model of Hao and Clem. The resulting thermodynamic critical field and the jump in the specific heat at T-c, calculated from it, increase monotonically as the oxygen content is increased, even up to x = 7.0. In contrast to this behavior, the superconducting transition temperature reaches a maximum of about 91.5 K at x = 6.94 and decreases again to 87.6 K for x = 7.0. The different trends of these quantities are attributed to the appearance of superconductivity in the Cu-O chains near x = 7.0.

引用

页码：1953 / 1954

页数：2

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