Numerical Analysis of Spin-1/2 Alternating Heisenberg-XY Antiferromagnet in One Dimension

Hidetoshi Nishimori, Kiyomi Okamoto

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The spin-1/2 alternating Heisenberg model with XY-like anisotropy is studied by numerical methods. This model exhibits critical behavior in the ground state as the bond-alternation parameter δ approaches 0. The critical exponents characterizing this ground-state critical point are estimated. The results agree well with those of the analytical calculation of Nakano and Fukuyama. A logarithmic correction of the type predicted by Black and Emery is found to be consistent with numerical data in the isotropic Heisenberg model but not in anisotropic models.

Original languageEnglish
Pages (from-to)1132-1137
Number of pages6
Journaljournal of the physical society of japan
Volume56
Issue number3
DOIs
Publication statusPublished - 1987 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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