Magnetic phases and long-range ordering of the Haldane system in high magnetic fields

Isao Harada, Yoshihiro Nishiyama

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Critical properties of field-induced magnetic phases are investigated in the one-dimensional S = 1 Haldane system with planar anisotropy, using the finite-temperature density-matrix renormalization group method. We point out that the underlying physics of the properties differs significantly between cases of different field directions: The magnetic phase is characterized as the gapless Tomonaga-Luttinger regime in one case and as the gapful soliton regime in the other. In connection with the information obtained for the one-dimensional spin chain, possible implications for the field-induced magnetic long-range ordering are discussed.

Original languageEnglish
Pages (from-to)107-112
Number of pages6
JournalProgress of Theoretical Physics
Issue number145 SUPPL.
Publication statusPublished - 2002


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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