Comment on Enhanced two-dimensional properties of the four-layered cuprate high-T-c superconductor TlBa2Ca3Cu4Oy

Editorial Material

关键词: REVERSIBLE MAGNETIC-PROPERTIES;    (LA1-XSRX)2CUO4 SINGLE-CRYSTALS;    CRITICAL FIELD HC2;    II SUPERCONDUCTORS;    PURITY DEPENDENCE;    TEMPERATURE;    PARAMETERS;    MODEL;   

DOI  :  10.1103/PhysRevB.72.176502

来源: SCIE

【 摘 要 】

We reanalyze published magnetization data and demonstrate that the conclusion of the original authors, claiming enhanced two-dimensional properties of the cuprate superconductor TlBa2Ca3Cu4Oy, is not supported by the experimental results. Our analysis shows that the magnetic field dependence of the mixed-state magnetization for this particular sample is amazingly close to the results of numerical calculations by Brandt for an ideal vortex lattice without fluctuations. This good agreement between experiment and theory allows for the evaluation of the absolute values of the upper critical field H-c2(T).

【 授权许可】

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