Slow relaxation of low-temperature vortex phases in Bi2Sr2CaCu2O8

Article

关键词: FLUX-LINE-LATTICE;    SINGLE-CRYSTALS;    SUPERCONDUCTORS;    METASTABILITY;    TRANSITIONS;    TRANSPORT;    DISORDER;    MATTER;    FILMS;    PEAK;   

DOI  :  10.1103/PhysRevB.66.140511

来源: SCIE

【 摘 要 】

Nonlinear transport in the low-temperature vortex glass state of single crystal Bi2Sr2CaCu2O8 has been investigated over long times (up to two weeks) with fast current pulses driven along the a-b plane. It is found that at low temperature and high magnetic field, both zero-field-cooled (ZFC) and field-cooled (FC) samples relax towards the same equilibrium state, which is much closer to the original ZFC state than to the FC state. The implication of this FC metastability for the vortex phase diagram is discussed in the context of previous measurements.

【 授权许可】

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