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Reversal-field memory in magnetic hysteresis

H. G. Katzgraber·F. Pazmandi·C. R. Pike·Kai Liu·R. T. Scalettar·K. L. Verosub·G. T. Zimanyi
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Abstract

We report results demonstrating a singularity in the hysteresis of magnetic materials, the reversal-field memory effect. This effect creates a nonanalyticity in the magnetization curves at a particular point related to the history of the sample. The microscopic origin of the effect is associated with a local spin-reversal symmetry of the underlying Hamiltonian. We show that the presence or absence of reversal-field memory distinguishes two widely studied models of spin glasses (random magnets).

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H. G. Katzgraber, F. Pazmandi, C. R. Pike, Kai Liu, R. T. Scalettar, K. L. Verosub, G. T. Zimanyi. 2003-04-24. Reversal-field memory in magnetic hysteresis. https://doi.org/10.1063/1.1557354

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