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

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

2003-12-12

arxiv.org/abs/cond-mat/0312311v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

Scientific paper

10.1209/epl/i2004-10042-8

The extraordinary Hall effect coefficients $R_s(T)$ of the canonical spin glass alloys ${\bf Au}Fe 8 at%$ and ${\bf Au}Mn 8 at%$ and of an archetype reentrant system ${\bf Au}Fe 18 at%$ 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.

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