Bose-Einstein to BCS crossover picture for high-T-c cuprates

被引：153
|
作者：
Uemura, YJ
机构：
[1] Dept. of Physics, Columbia University, New York
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1997年 / 282卷
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/S0921-4534(97)00194-9
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Combining (1) the universal correlations between T-c and n(s)/m* (superconducting carrier density / effective mass) and (2) the pseudo-gap behavior in the underdoped region, we obtain a picture to describe superconductivity in cuprate systems in evolution from Bose-Einstein to BCS condensation. Overdoped and Zn-substituted cuprate systems show signatures of reduced superfluid density in a microscopic phase separation. Scaling of T-c to the superfluid volume density n(s) in all these cases indicate importance of Bose condensation.
引用
收藏
页码：194 / 197
页数：4
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