A quantum-mechanical relaxation model

R. Skomski, A. Kashyap, D. J. Sellmyer

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The atomic origin of micromagnetic damping is investigated by developing and solving a quantum-mechanical relaxation model. A projection-operator technique is used to derive an analytical expression for the relaxation time as a function of the heat-bath and interaction parameters. The present findings are consistent with earlier research beyond the Landau-Lifshitz-Gilbert (LLG) equation and show that the underlying relaxation mechanism is very general. Zermelo's recurrence paradox means that there is no true irreversibility in non-interacting nanoparticles, but the corresponding recurrence times are very long and can be ignored in many cases.

Original languageEnglish (US)
Article number07D507
JournalJournal of Applied Physics
Issue number7
StatePublished - Apr 1 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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