Superconductivity within the t-t′ Hubbard model of a bilayer -: art. no. 144529

被引：2
|
作者：
Mráz, J
Hlubina, R
机构：
[1] Comenius Univ, Dept Solid State Phys, Bratislava 84248, Slovakia
[2] SISSA, Int Sch Adv Studies, I-34014 Trieste, Italy
来源：
PHYSICAL REVIEW B | 2004年 / 70卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.70.144529
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Making use of a variational approach to Kohn-Luttinger superconductivity, we study the superconducting state of two coupled CuO2 planes. The bilayer is described in terms of a t-t(') Hubbard model with weak interplane hopping. For parameters relevant to overdoped cuprates, we find a substantial increase of the mean field transition temperature T-c, when compared with the single layer model. This increase is driven by the enhanced density of states of the bilayer.
引用
收藏
页码：144529 / 1
页数：5
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