Field-history-dependent peak effect in the superconducting mixed state of CeRu2

被引：14

作者：

Tenya, K ^{[1
]}

Yasunami, S

Tayama, T

Amitsuka, H

Sakakibara, T

Hedo, M

Inada, Y

Haga, Y

Yamamoto, E

Onuki, Y

机构：

[1] Hokkaido Univ, Grad Sch Sci, Div Phys, Sapporo, Hokkaido 0600810, Japan

[2] Osaka Univ, Grad Sch Sci, Div Phys, Toyonaka, Osaka 5600043, Japan

[3] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

来源：

PHYSICA B-CONDENSED MATTER | 1999年 / 259-61卷

关键词：

flux pinning; peak effect; magnetization measurement;

D O I：

10.1016/S0921-4526(98)00819-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Detailed magnetization measurements of CeRu2 single crystals with different purity are performed in order to clarify whether their peak effects are due to the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) transition. The onset field of the peak shifts to lower held side as the sample becomes impure. Regardless of the purity the Ginzburg-Landau parameter kappa(2) continues to increase on cooling from T-c, indicating little paramagnetic suppression of the superconductivity. These results disagree with the scenario of the FFLO transition. (C) 1999 Elsevier Science B.V, All rights reserved.

引用

页码：692 / 693

页数：2

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