Reversal-field memory in magnetic hysteresis

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 wit...

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Bibliographic Details
Published in:Journal of applied physics 2003-05, Vol.93 (10), p.6617-6619
Main Authors: Katzgraber, H. G., Pázmándi, F., Pike, C. R., Liu, Kai, Scalettar, R. T., Verosub, K. L., Zimányi, G. T.
Format: Article
Language:English
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Summary: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).
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1557354