ANISOTROPIC FLUCTUATION MAGNETOCONDUCTIVITY IN A YBA2CU3O7-DELTA SINGLE-CRYSTAL ABOVE TC

被引：20

作者：

HOLM, W ^{[1
]}

ANDERSSON, M ^{[1
]}

RAPP, O ^{[1
]}

KULIKOV, MA ^{[1
]}

MAKARENKO, IN ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST CRYSTALLOG,117333 MOSCOW,RUSSIA

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.48.4227

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The in- and out-of-plane magnetoresistance of a single crystal of YBa2Cu3O7-delta has been measured at temperatures above T(c) in magnetic fields up to 12 T. A Montgomery-type contact configuration was used with corrections for the finite size of the contacts taken into account. For temperatures up to 2.5 K above T(c) the data are well described by both the Aronov-Hikami-Larkin theory for a layered superconductor (applicable only for the in-plane magnetoconductivity) and the Ginzburg-Landau theory for a three-dimensional anisotropic superconductor (applicable for both the in-plane and the out-of-plane magnetoconductivity). All three analyses give consistent results for the coherence lengths.

引用

页码：4227 / 4230

页数：4

共 21 条

[1]

ALEKSANDROV IV, 1988, JETP LETT+, V48, P493

[2] MAGNETORESISTANCE MEASUREMENTS ON POLYCRYSTALLINE YBA2CU3O7-DELTA [J].