Theory for underdoped high-Tc superconductors:: effects of phase fluctuations

被引：7
|
作者：
Schäfer, F [1 ]
Timm, C [1 ]
Manske, D [1 ]
Bennemann, KH [1 ]
机构：
[1] Free Univ Berlin, Inst Theoret Phys, D-14195 Berlin, Germany
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 1999年 / 117卷 / 3-4期
关键词：
D O I：
10.1023/A:1022572322775
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In underdoped cuprates, T-c is thought to be determined by Cooper pair phase fluctuations because of the small superfluid density n(s). Experimentally, T-c is found to scale with n(s). The fluctuation-exchange approximation (FLEX) in its standard form fails to predict this behavior of T-c since it does not include phase fluctuations. We therefore extend the FLEX to include them selfconsistently. We present results for T-c[n(s),x], where x is the doping.
引用
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页码：223 / 227
页数：5
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