A New Phase of the S= 1 Bilinear-Biquadratic Chain: -a Trimerized State-

Kiyohide Nomura, Satoshi Takada

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

We investigate the S= 1 bilinear-biquadratic model. In some region, the trimerized variational state is a good candidate for the ground state. This explains why the Sutherland model (J1>0 and J2/ J1 = -1) has soft modes at q=0, ±2π/3. Moreover, the full phase diagram of this model is discussed. It is found that at the pure biquadratic ferromagnetic point, the ground state is extremely degenerate.

Original languageEnglish
Pages (from-to)389-392
Number of pages4
Journaljournal of the physical society of japan
Volume60
Issue number2
DOIs
Publication statusPublished - Jan 1 1991
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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