CRITICAL TEMPERATURE OF HIGH-Tc SUPERCONDUCTORS AND BOUNDARY CONDITIONS IN GINZBURG-LANDAU THEORY

被引：6

作者：

Lykov, A. ^{[1
]}

机构：

[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2009年 / 23卷 / 20-21期

关键词：

Ginzburg-Landau equation; boundary condition; cuprate superconductors;

D O I：

10.1142/S0217979209063420

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

New boundary condition for the order parameter in the Ginzburg-Landau theory is applied to the case of CuO2 planes which are the main structural elements responsible for superconductivity in high-T-c superconductors. It was found that the order parameter in these superconductors is significantly depressed in the CuO2 planes. As a result, this boundary condition to the GL equations is found to limit the critical temperature of high-T-c superconductors. Thus, in order to increase T-c of cuprate superconductors, the number of CuO2 planes that are within a short distance of each other in unit cell or insulating properties of the layers located in the vicinity to the CuO2 planes should be increased.

引用

页码：4269 / 4276

页数：8

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