Phase diagram of high-T-c superconductors: Influence of anisotropy and disorder

Article

关键词: HIGH-TEMPERATURE SUPERCONDUCTORS;    LATTICE-MELTING TRANSITION;    ABRIKOSOV VORTEX LATTICE;    IRREVERSIBILITY LINE;    SINGLE-CRYSTALS;    ELASTIC THEORY;    FLUX LATTICES;    BI2SR2CACU2O8;    YBA2CU3O7-DELTA;    DIMENSIONALITY;   

DOI  :  10.1103/PhysRevB.55.3192

来源: SCIE

【 摘 要 】

We propose a phase diagram for the vortex structure of high-temperature superconductors which incorporates the effects of anisotropy and disorder. It is based on numerical simulations using the three-dimensional Josephson-junction array model. We support the results with an estimation of the internal energy and configurational entropy of the system. Our results give a unified picture of the behavior of the vortex lattice, from the very anisotropic Bi2Sr2CaCu2O8 to the less anisotropic YBa2Cu3O7, and from the first-order melting ocurring in clean samples to the continuous transitions observed in samples with defects.

【 授权许可】

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