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

页码：144529 / 1

页数：5

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