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

Abstract

The extraordinary Hall effect coefficients $R_s(T)$ of the canonical spin glass alloys $\mathbf{Au}Fe8at$ and $\mathbf{Au}Mn8at$ and of an archetype reentrant system $\mathbf{Au}Fe18at$ 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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• Experimental observation of spin glass state in highly disordered quaternary Heusler alloy FeRuMnGa
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• Spin Textures induced by Quenched Disorder in a Reentrant Spin Glass: Vortices versus "Frustrated" Skyrmions
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• Spin-chirality decoupling in Heisenberg spin glasses and related systems
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• Disproportionate influence of site disorder on the evolution of magnetic phases in anti-Heusler alloy Al${}_2$MnFe