Multiple-spin exchange phase diagram on the triangular lattice: Schwinger-boson analysis

We present the classical phase diagram of a multiple-spin exchange hamiltonian involving up to five-particle exchange. Schwinger-boson (mean field theory) calculations confirm the classical picture of competing ferromagnetic and antiferromagnetic phases, and suggest that the frustration induced by f...

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Bibliographic Details
Published inJournal of low temperature physics Vol. 110; no. 1-2; pp. 327 - 332
Main Authors Misguich, G, Bernu, B, Lhuillier, C
Format Journal Article
LanguageEnglish
Published 01.01.1998
Subjects
Antiferromagnetic materials
Electromagnetic field theory
Ferromagnetic materials
High energy physics
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Summary:We present the classical phase diagram of a multiple-spin exchange hamiltonian involving up to five-particle exchange. Schwinger-boson (mean field theory) calculations confirm the classical picture of competing ferromagnetic and antiferromagnetic phases, and suggest that the frustration induced by four-particle exchange might destroy long range order.
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ISSN:0022-2291
DOI:10.1023/a:1022588817636