Evidence for possible phase separations in RuSr2(Gd,Ce)2Cu2O10-δ -: art. no. 020511

被引：48

作者：

Xue, YY ^{[1
]}

Cao, DH

Lorenz, B

Chu, CW

机构：

[1] Univ Houston, Dept Phys, Houston, TX 77204 USA

[2] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.65.020511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An unusual thermal-magnetic hysteresis was observed between a minor magnetic transition around 120 K and the main one at 80 K in superconducting RuSr2(R,Ce)(2)Cu2O10-delta (Ru1222R) samples, where R=Gd or Eu, down to a submicron length scale. The observation suggests a possible phase separation and is consistent with the very small but universal demagnetizing factor observed, which is difficult to reconcile with the canted-spin structure previously proposed. In such a scenario, the unusual superconducting properties of the Ru-based cuprates can also be understood naturally.

引用

页码：1 / 4

页数：4

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