Interlayer tunnelling in Bi2Sr2CaCu2O8+δ single crystals

被引：2

作者：

Thomas, PJ ^{[1
]}

Fenton, JC ^{[1
]}

Yang, G ^{[1
]}

Gough, CE ^{[1
]}

机构：

[1] Univ Birmingham, Superconduct Res Grp, Birmingham B15 2TT, W Midlands, England

来源：

PHYSICA B | 2000年 / 280卷 / 1-4期

基金：

英国工程与自然科学研究理事会;

关键词：

c-axis transport; intrinsic Josephson effects; Bi-2212; out-of-plane conductivity;

D O I：

10.1016/S0921-4526(99)01646-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present measurements of the intrinsic quasi-particle conductivity along the c-axis of 2212-BSCCO single-crystal mesa structures in the superconducting and normal states. Direct measurement of the mesa temperature enables corrections to be made for self-heating and permits the acquisition of reliable I-V characteristics over a wide range of temperatures and voltages. Unlike a conventional superconductor, there is no evidence for any change in the quasiparticle conductivity at T-c, consistent with precursor pairing of electrons in the normal state. At low temperatures the initial low-voltage linear conductivity exhibits a T-2 dependence, approaching a limiting value at zero temperature. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：245 / 246

页数：2