Evidence for possible phase separations in RuSr2(Gd,Ce)(2)Cu2O10-delta

Article

关键词: GD;    SUPERCONDUCTIVITY;    MAGNETIZATION;    RUSR2GDCU2O8;    COEXISTENCE;    EU;   

DOI  :  10.1103/PhysRevB.65.020511

来源: SCIE

【 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.

【 授权许可】

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