Andreev reflections from La2-xSrxCuO4 single crystals

被引：8

作者：

Achsaf, NS ^{[1
]}

Goldschmidt, G ^{[1
]}

Deutscher, G ^{[1
]}

Revcolevschi, A ^{[1
]}

Vietkine, A ^{[1
]}

机构：

[1] UNIV PARIS 11,CHIM SOLIDE LAB,F-91405 ORSAY,FRANCE

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 1996年 / 105卷 / 3-4期

关键词：

D O I：

10.1007/BF00768407

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Andreev reflections have been studied at the interface between a gold tip and La2-xSrxCuO4 (x=0.11,0.12) single crystals, along the (IIO) direction, shape of the I(V) characteristic has been analyzed within the framework of the theory of Tanaka and Kashiwaya, allowing for an anisotropic order parameter, The data cannot be fitted either to a pure isotropic s-wave or pure d-wave symmetry, The best fit is obtained for an anisotropic gap, with Delta(max)=15 meV and Delta(min)=5 meV.

引用

页码：329 / 334

页数：6

共 16 条

[1]

ACHSAF N, 1996, COHERENCE HIGH TEMPE

[2] Anisotropic superconductivity: (s+d)-wave model, (d+s)-wave model and the effect of normal impurities [J].