SPIN-FLUCTUATION STATISTICS IN CUMN

被引：40

作者：

ISRAELOFF, NE

ALERS, GB

WEISSMAN, MB

机构：

[1] Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.44.12613

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The resistance of small Cu0.91Mn0.09 samples in the spin-glass phase showed random changes on thermal cycling, quantitatively showing that random spin configurations affect universal conductance fluctuations. Low-frequency resistance noise showed large non-Gaussian effects, which were inconsistent with the simplest droplet models for spin glasses. A typical spin-rearrangement event involved about 10(4) spins. Several detailed statistical parameters were measured for comparison with droplet and hierarchical models.

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页码：12613 / 12616

页数：4

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