Quantum coherence in small antiferromagnets

Stewart Barnes, R. Ballou, B. Barbara, J. Strelen

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Abstract

An antiferromagnetic particle with an excess spin j→ has 2 degrees of freedom. The one associated with j→ is ferromagnetic, while the antiferromagnetic behavior involves Néel vector n→. It is shown that the spin-parity effect described by Loss et al. has to do with the ferromagnetic degree of freedom and does not imply the localization of n→ for small enough particles for half-integer spin. It is also shown that the tunnel splitting associated with n→ is insensitive to applied fields.

Original languageEnglish (US)
Pages (from-to)289-292
Number of pages4
JournalPhysical Review Letters
Volume79
Issue number2
StatePublished - 1997

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Barnes, S., Ballou, R., Barbara, B., & Strelen, J. (1997). Quantum coherence in small antiferromagnets. Physical Review Letters, 79(2), 289-292.