Superconducting transitions from the pseudogap state: d-wave symmetry, lattice, and low-dimensional effects
Superconducting transitions from the pseudogap state: d-wave symmetry, lattice, and low-dimensional effects
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DOI：
10.1103/physrevb.59.7083
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发表时间：
1998-05
影响因子：
3.7
通讯作者：
Qijin Chen;I. Kosztin;B. Jankó;K. Levin
中科院分区：
文献类型：
--
作者：
Qijin Chen;I. Kosztin;B. Jankó;K. Levin
我们研究的行为的超导转变温度内先前开发的BCS玻色爱因斯坦交叉图片。这幅图基于Kadanoff和Martin的解耦方案，并由Patton进一步扩展，可用于导出赝能隙存在时超导转变温度的简单形式。我们扩展了以前的工作，解决了s波配对的情况下，在jelvis，探索的解决方案T_c作为变量耦合的函数，在更多的物理相关的情况。因此，我们确定的降维，周期性晶格和d-波配对相互作用的影响。铜酸盐超导体的影响进行了讨论。
We investigate the behavior of the superconducting transition temperature within a previously developed BCS-Bose Einstein crossover picture. This picture, based on a decoupling scheme of Kadanoff and Martin, further extended by Patton, can be used to derive a simple form for the superconducting transition temperature in the presence of a pseudogap. We extend previous work which addressed the case of s-wave pairing in jellium, to explore the solutions for T_c as a function of variable coupling in more physically relevant situations. We thereby ascertain the effects of reduced dimensionality, periodic lattices and a d-wave pairing interaction. Implications for the cuprate superconductors are discussed.