Irreversibility crossover in the H-T phase diagram of a Cd1-xMnxTe spin glass

被引：16

作者：

Bernardot, F ^{[1
]}

Rigaux, C ^{[1
]}

机构：

[1] UNIV PARIS 07,CNRS URA 17,PHYS SOLIDES GRP,F-75251 PARIS 05,FRANCE

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.56.2328

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have measured the longitudinal component of the zero-field-cooled and held-cooled magnetization of the compound Cd0.62Mn0.38Te between 10 and 400 G in the temperature range 7-11 K. The irreversible magnetization shows two distinct regimes depending on field, from which Mr determine the H-T phase diagram. A crossover from Ising to Heisenberg behavior is found near 100 G, with evidence in the hihg-field region of a Gabay-Toulouse line characteristic of Heisenberg spin glasses. The existence of a weak anisotropic Dzyaloshinsky-Moriya interaction due to the superexchange mechanism explains thc observed behavior.

引用

页码：2328 / 2331

页数：4

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