Massless phases of Haldane-gap antiferromagnets in a magnetic field

G. Fáth, Peter B. Littlewood

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The behavior of Haldane-gap antiferromagnets in a strong magnetic field is not universal. While the low-energy physics of the conventional one-dimensional spin-1 Heisenberg model in its magnetized regime is described by one incommensurate soft mode, other systems with somewhat perturbed coupling constants can possess two characteristic soft modes in a certain range of the field strength. Such a two-component Luttinger liquid phase is realized above the massive Haldane-gap phase, and in general above any massive nonmagnetic phase, when the ground state exhibits short-range incommensurate fluctuations already in the absence of the field.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume58
Issue number22
Publication statusPublished - Dec 1 1998

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Ground state
Physics
Magnetic fields
Liquids
magnetic fields
field strength
liquid phases
physics
ground state
energy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Massless phases of Haldane-gap antiferromagnets in a magnetic field. / Fáth, G.; Littlewood, Peter B.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 58, No. 22, 01.12.1998.

Research output: Contribution to journalArticle

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