Transport measurements of the heavy fermion superconductor CeCu2Si2 under hydrostatic pressure in helium

被引：20

作者：

Thomasson, J

Okayama, Y

Sheikin, I

Brison, JP

Braithwaite, D

机构：

[1] CEA Grenoble, LCP, SPSMS, Dept Rech Fondamentale Mat condensee, F-38054 Grenoble 9, France

[2] Saga Univ, Fac Sci & Engn, Saga 840, Japan

[3] Russian Acad Sci, Inst High Pressure Phys, Troitsk 142092, Moscow District, Russia

[4] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble 9, France

来源：

SOLID STATE COMMUNICATIONS | 1998年 / 106卷 / 09期

关键词：

superconductors; heavy fermions; high pressure;

D O I：

10.1016/S0038-1098(98)00087-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Transport measurements on a single crystal of the heavy fermion superconductor CeCu2Si2 have been performed under pressure in a diamond anvil cell with helium as pressure transmitting medium. Probably because of the very hydrostatic conditions, the superconducting transition is shown to remain narrow under pressure. The temperature dependence of the upper critical field, H-c2, is analyzed assuming strong coupling. The effective mass is found to decrease consistently with other reports, but the expected sharp increase of T-c under pressure is not found in the sample here. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：637 / 641

页数：5

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