Dissipation by nuclear spins in macroscopic magnetization tunneling

Anupam Garg*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


Magnetic systems are currently considered attractive candidates in which to look for quantum phenomena such as the tunneling of the total magnetization of a small (100 diameter) particle out of a metastable easy direction or between degenerate easy directions. The effect of nuclear spins as a dissipative environment for such a particle is considered and shown to be significant. Two dimensionless parameters characterize the dissipation: a coupling strength varying as the number of nuclear spins, and the ratio of the nuclear and electronic Larmor frequencies.

Original languageEnglish (US)
Pages (from-to)1541-1544
Number of pages4
JournalPhysical review letters
Issue number10
StatePublished - 1993

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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