Chiral susceptibility in canonical spin glass and reentrant alloys from Hall effect measurements

P. Pureur; F. Wolff Fabris; J. Schaf; I. A. Campbell

doi:10.1209/epl/i2004-10042-8

paper

Chiral susceptibility in canonical spin glass and reentrant alloys from Hall effect measurements

arXiv:cond-mat/0312311 · doi:10.1209/epl/i2004-10042-8

Abstract

The extraordinary Hall effect coefficients $R_{s} (T)$ of the canonical spin glass alloys $Au F e 8 a t$ and $Au M n 8 a t$ and of an archetype reentrant system $Au F e 18 a t$ were measured as functions of temperature. The data show a critical cusp-like term superimposed on a smooth background for the spin glasses, and change of sign with temperature for the reentrant. The results can be interpreted consistently by invoking a chiral Hall effect contribution as proposed by Kawamura.