Phase diagram of magnetic ladders constructed from a composite-spin model

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31 Citations (Scopus)

Abstract

Whiteșs density matrix renormalization group method has been applied to an S=1/2+1/2 composite-spin model, which can also be considered as a two-leg ladder model. By appropriate choices of the coupling constants this model allows one not only to study how the gap is opened around the gapless integrable models, but also to interpolate continuously between models with different spin lengths. We have found indications for the existence of several different massive phases.

Original languageEnglish
Pages (from-to)291-298
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume55
Issue number1
DOIs
Publication statusPublished - Jan 1 1997

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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