Parameter-free expression for superconducting Tc in cuprates

被引:41
作者
Alexandrov, AS [1 ]
Kabanov, VV
机构
[1] Univ Loughborough, Dept Phys, Loughborough LE11 3TU, Leics, England
[2] JINR, Bogoliubov Lab Theoret Phys, Dubna, Russia
[3] Josef Stefan Inst, SI-1001 Ljubljana, Slovenia
来源
PHYSICAL REVIEW B | 1999年 / 59卷 / 21期
关键词
D O I
10.1103/PhysRevB.59.13628
中图分类号
T [工业技术];
学科分类号
08 ;
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].
引用
收藏
页码:13628 / 13631
页数:4
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