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arXiv · 1902.00449

Quantum thermodynamics of complex ferrimagnets

Joseph Barker·Gerrit E. W. Bauer
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Abstract

High-quality magnets such as yttrium iron garnet (YIG) are electrically insulating and very complex. By implementing a quantum thermostat into atomistic spin dynamics we compute YIG's key thermodynamic properties, viz. the magnon power spectrum and specific heat, for a large temperature range. The results differ (sometimes spectacularly) from simple models and classical statistics, but agree with available experimental data.

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Joseph Barker, Gerrit E. W. Bauer. 2019-02-01. Quantum thermodynamics of complex ferrimagnets. https://doi.org/10.1103/physrevb.100.140401

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