Have resonance experiments seen macroscopic quantum coherence in magnetic particles? the case from power absorption

Anupam Garg*

*Corresponding author for this work

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

Recent magnetic resonance experiments on ferritin and nanofabricated magnetic dots of Fe(CO)5 have been interpreted in the framework of macroscopic quantum coherence (MQC). The power absorption in MQC is calculated and shown to be exceeded by a factor of 50 to 150 in the ferritin experiments. Alternative microscopic causes for the resonance are suggested. In the Fe(CO)5 experiments, MQC predicts no resonance at all at the ac fields involved, and the power absorbed is 1018 times larger than expected.

Original languageEnglish (US)
Pages (from-to)4249-4252
Number of pages4
JournalPhysical review letters
Volume71
Issue number25
DOIs
StatePublished - Jan 1 1993

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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