Superconducting properties and anisotropy of a HgBa2CuO4+delta single crystal

被引：25

作者：

LeBras, G

Fruchter, L

Vulcanescu, V

Viallet, V

Bertinotti, A

Forget, A

Hammann, J

Marucco, JF

Colson, D

机构：

[1] UNIV PARIS 11,PHYS SOLIDES LAB,CNRS,F-91405 ORSAY,FRANCE

[2] CEA SACLAY,SERV PHYS ETAT CONDENSE,F-91191 GIF SUR YVETTE,FRANCE

来源：

PHYSICA C | 1996年 / 271卷 / 3-4期

关键词：

anisotropic superconductor; magnetization; penetration depth; upper critical field H-c2;

D O I：

10.1016/S0921-4534(96)00543-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have performed both longitudinal and transverse magnetization measurements on a HgBa2CuO4+delta single crystal, from which we extract the superconducting parameters (lambda(parallel to)(0) approximate to 1400 Angstrom, xi(parallel to)(0) approximate to 20 Angstrom) The anisotropy is found (gamma approximate to 30) to be the lowest of the known values for the HgBa2Can-1CunO2n+2+delta family. A decrease of the apparent anisotropy is observed close to T-c, which we tentatively attribute to a quasi-2D to 3D crossover.

引用

页码：205 / 213

页数：9

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