EFFECT OF MAGNETIC-IMPURITIES ON UNIVERSAL CONDUCTANCE FLUCTUATIONS

被引：22

作者：

BENOIT, A

MAILLY, D

PERRIER, P

NEDELLEC, P

机构：

[1] CNRS,MICROSTRUCT & MICROELECTR LAB,F-92220 BAGNEUX,FRANCE

[2] UNIV PARIS 11,CTR SPECTROMETRIE NUCL & SPECTROMETRIE MASSE,F-91405 ORSAY,FRANCE

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1992年 / 11卷 / 03期

关键词：

D O I：

10.1016/0749-6036(92)90388-L

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Experiments performed on mesoscopic systems made of dilute magnetic alloys (AuMn and AuCr) show the effect of magnetic impurities on the Universal Conductance Fluctuations. The magnetic field allows us to switch from a low field state where the impurities are free and destroy the phase coherence to a high field state where the magnetization is saturated and the phase coherence is conserved along the whole sample. The results are interpreted by a molecular field approach in the spin glass state. However, we do not observe any jump of the conductance with time induced by spin flip in the zero field spin glass state. An explanation of the absence of jump is proposed. © 1992.

引用

页码：313 / 316

页数：4

共 8 条

[1]

BENOIT A, 1987, P ANDERSON LOCALISAT

[2]

DEVEGVAR PGN, IN PRESS

[3] UNIVERSAL CONDUCTANCE FLUCTUATIONS AS A PROBE OF CHAOTIC BEHAVIOR IN MESOSCOPIC METALLIC SPIN-GLASSES [J].