Rigorous determination of the ground-state phases for a generalized ANNNI chain with alternating spins

Jong Jae Kim, Shigeyoshi Mori, Isao Harada

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Abstract

We determine exactly the possible ground-state configurations for a generalized axial-next-nearest-neighbor Ising (ANNNI) chain with alternating spins s and S in an external field, by extending the Morita-Horiguchi technique [Phys. Lett. A 38 (1972) 223]. The existence of noncompensating magnetic moments brings forth a ground-state phase diagram with full variety.

Original languageEnglish
Pages (from-to)68-72
Number of pages5
JournalPhysics Letters A
Volume202
Issue number1
DOIs
Publication statusPublished - Jun 12 1995

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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