Magnetoelastic dissipation in macroscopic magnetization tunneling

Anupam K Garg*, Gwang Hee Kim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The tunneling of the total magnetization of a small (100-) magnetic particle out of a metastable easy direction is a promising candidate for macroscopic quantum tunneling. It is shown that the coupling of the magnetization to the phonons is an extremely weak source of dissipation that does not reduce the tunneling rate. A model in which the magnetic particle is embedded in a solid medium is considered, and the spectral density is derived for various crystal symmetries.

Original languageEnglish (US)
Pages (from-to)712-718
Number of pages7
JournalPhysical Review B
Volume43
Issue number1
DOIs
StatePublished - Jan 1 1991

ASJC Scopus subject areas

  • Condensed Matter Physics

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