Evidence for a vortex-lattice melting transition in an organic superconductor

被引：14

作者：

Fruchter, L

Aburto, A

PhamPhu, C

机构：

[1] Laboratoire de Physique des Solides, CNRS-Université Paris-Sud, 91405 Orsay CEDEX

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.56.R2936

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have observed a step in the equilibrium magnetization for the organic superconductor K-(BEDT-TTF)(2)Cu[N(CN)2]Br characteristic of a transition of the flux-line solid to a liquid of flux lines. The entropy variation at the transition is found larger than that expected from the theory of the flux-line lattice melting in an anisotropic superconductor. We interpret the decrease of the magnetization step magnitude upon a more rapid cooling of the material to be the consequence of the creation of some strong pins.

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页码：R2936 / R2939

页数：4

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