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Four-particle exchange in solid He-3Calculations are reported which suggest that there is a physically important four-atom exchange process in bcc He-3 and an important four-spin term in the exchange Hamiltonian. A simple mean-field analysis of this Hamiltonian appears to account for a number of the perplexing properties of bcc He-3. An understanding of other properties may require treatment of the exact four-spin term.
Document ID
19750056649
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mcmahan, A. K.
(Cornell University Ithaca, N.Y.; California, University, Livermore, Calif., United States)
Wilkins, J. W.
(Cornell University Ithaca, N.Y., United States)
Date Acquired
August 8, 2013
Publication Date
August 11, 1975
Publication Information
Publication: Physical Review Letters
Volume: 35
Subject Category
Atomic And Molecular Physics
Accession Number
75A40721
Funding Number(s)
CONTRACT_GRANT: NSF DMR-74-23494
CONTRACT_GRANT: NGR-33-010-188
Distribution Limits
Public
Copyright
Other

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