Heterogeneous high temperature cuprate superconductors

被引：0

作者：

Hayashi, M ^{[1
]}

Ebisawa, H ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Informat Sci, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 388卷

关键词：

high temperature superconductivity; t-J model; boundary;

D O I：

10.1016/S0921-4534(02)02607-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The boundary between highly under-doped and over-doped cuprate superconductors is studied within the framework of the slave-boson mean-field theory of the t-J model. Because of the proximity effect of singlet resonating valence bond order, the superconductivity appears at the boundary even when there is no bulk superconductivity. Remarkably, the transition temperature of this "boundary superconductivity" exceeds the maximum superconducting transition temperature of the base material in the bulk. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：29 / 30

页数：2

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