Chern-Simons theory for magnetization plateaus of the frustrated J1-J2 Heisenberg model

Ming Che Chang, Min Fong Yang

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9 Citations (Scopus)

Abstract

The magnetization curve of the two-dimensional spin-1/2 J1-J2 Heisenberg model is investigated by using the Chern-Simons theory under mean-field approximations. We find that the magnetization curve increases monotonically for J2/J1<0.267949, where the system under zero external field is in the antiferromagnetic Néel phase. For larger ratios of J2/J1, various plateaus will appear in the magnetization curve. In particular, in the disordered phase, our results support the existence of the M/Msat = 1/2 plateau, and predict a plateau at M/Msat = 1/3. Verification of these interesting results would indicate a strong connection between the frustrated antiferromagnetic system and the quantum Hall system.

Original languageEnglish
Article number184416
Pages (from-to)1844161-1844166
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number18
Publication statusPublished - 2002 Nov 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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