Bond-operator representation of quantum spins: Mean-field theory of frustrated quantum Heisenberg antiferromagnets

Subir Sachdev, R. N. Bhatt

Research output: Contribution to journalArticle

397 Scopus citations

Abstract

We introduce a new representation of S=1/2 quantum spins in terms of bond operators. The bond operators create and annihilate singlet and triplet bonds between a pair of spins. The representation is useful in describing the transition between dimerized and magnetically ordered phases of quantum antiferromagnets. It is used to obtain a mean-field theory of the two-dimensional frustrated quantum Heisenberg antiferromagnets considered recently by Gelfand, Singh, and Huse. The method should also be useful in the analysis of random quantum antiferromagnets.

Original languageEnglish (US)
Pages (from-to)9323-9329
Number of pages7
JournalPhysical Review B
Volume41
Issue number13
DOIs
StatePublished - Jan 1 1990
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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