Chiral susceptibility in canonical spin glass and reentrant alloys from Hall effect measurements
Abstract
The extraordinary Hall effect coefficients Rs(T) of the canonical spin glass alloys AuFe 8 at% and AuMn 8 at% and of an archetype reentrant system AuFe 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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