Towards universal magnetization curves in the superconducting state of RuSr2GdCu2O8

Article

关键词: SQUID MAGNETOMETER;    DC MAGNETIZATION;    SAMPLES;    GD;    COEXISTENCE;    TRANSITION;    SYSTEM;    PHASE;    ORDER;    EU;   

DOI  :  10.1103/PhysRevB.68.144518

来源: SCIE

【 摘 要 】

The reported dc magnetization measurements on the magnetic (T(M)similar to130 K) superconductor (T(c)similar to30 K) RuSr2GdCu2O8 (Ru-1212Gd) reveal a variety of behaviors below T-c. The fact that, for magnetometers which require sample motion during the measurements, artifacts can arise in the measured magnetic moment, when the movement of the sample is done in an inhomogeneous field, complicates even more the analysis of the existing data. In order to avoid the generation of artifacts, we did measurements on a stationary Ru-1212Gd sample employing a homemade magnetometer. The measured curves showed none of the suspicious symptoms present in the curves measured with a magnetometer employing sample movement, and if verified by measurements on stationary samples by other groups, a universal behavior in the superconducting state of Ru-1212Gd could be revealed by the dc magnetization measurements. Our considerations support the existence of bulk superconductivity for Ru-1212Gd.

【 授权许可】

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