Parameter-free expression for superconducting T-c in cuprates

Article

关键词: MAGNETIC-FIELD;    TRANSITION-TEMPERATURE;    DOPING DEPENDENCE;    BI2SR2CACU2O8+DELTA;    PSEUDOGAP;    LA2-XSRXCUO4;    BIPOLARONS;    CORES;    MODEL;    BANDS;   

DOI  :  10.1103/PhysRevB.59.13628

来源: SCIE

【 摘 要 】

A parameter-free expression for the superconducting critical temperature of layered cuprates is derived which allows us to express T-c in terms of experimentally measured parameters. It. yields T-c values observed in about 30 lanthanum-, yttrium-, and mercury-based samples for different levels of doping. This remarkable agreement with the experiment as well as the unusual critical behavior and the normal-state gap indicate that many cuprates are close to the Bose-Einstein condensation regime. [S0163-1829(99)03921-1].

【 授权许可】

Free