Microwave surface impedance in overdoped Tl2Ba2CuO6+δ

被引：1

作者：

Izawa, K ^{[1
]}

Shibata, A

Takahashi, H

Matsuda, Y

Hasegawa, M

Chikumoto, N

van der Beek, CJ

Konczykowski, M

机构：

[1] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1068666, Japan

[2] ISTEC, Superconduct Res Lab, Minato Ku, Tokyo 1050023, Japan

[3] Ecole Polytech, Solides Irradies Lab, F-91128 Palaiseau, France

来源：

PHYSICA B | 2000年 / 284卷

关键词：

microwave surface impedance; transmittivity; upper critical field;

D O I：

10.1016/S0921-4526(99)02263-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The microwave surface impedance Z(s) = R-s + iX(s) and transmittivity T-H' of overdoped Tl2Ba2CuO6+delta have been measured in a magnetic field up to 7 T in order to clarify the unusual temperature dependence of the DC resistive-transition field H*. From the result of T-H', columnar defects enhance H*, indicating that H* is the melting point of vortices instead of the mean field H-c2. The field dependence of R-s is found to be unusual as compared with that expected from the result of the DC resistivity. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：945 / 946

页数：2

共 10 条

[1] BOSE-EINSTEIN CONDENSATION OF CHARGED BOSONS IN A MAGNETIC-FIELD [J].