EFFECT OF QUANTUM FLUCTUATIONS OF VORTICES ON REVERSIBLE MAGNETIZATION IN HIGH-T(C) SUPERCONDUCTORS

被引：24

作者：

BULAEVSKII, LN

CHO, JH

MALEY, MP

KES, P

LI, Q

SUENAGA, M

LEDVIJ, M

机构：

[1] LEIDEN UNIV,KAMERLINGH ONNES LAB,2312 AV LEIDEN,NETHERLANDS

[2] BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973

[3] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011

[4] IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.50.3507

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The field (B) and temperature dependence of reversible magnetization M in Bi (2:2:1:2) single crystals is measured for the orientation of the field along the c axis. The slope of the curve M vs lnB decreases remarkably with field below 70 K. In the mean-field approach this slope should be almost B independent. We explain this change of slope by the quantum fluctuations of vortices. We show that for magnetization quantum fluctuations are important at all temperatures except in a narrow region near T(c).

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页码：3507 / 3510

页数：4

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