Large-S Approach to Chiral Phases in Frustrated Spin Chains

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概要

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• A large-S approach to the description of chiral phases in frustrated antiferromagnetic spin-S chains with easy-plane anisotropy is proposed. The approach is valid in the vicinity of the classical Lifshitz point j = 1/4, where j is the relative strength of the frustrating next-nearest-neighbor coupling. The effective theory turns out to be the nonlinear σ-model with the additional fourth-order term in spatial derivatives. The topological term persists for j > 1/4, which leads to disappearance of the chiral gapped phase for half-integer S, in accordance with the recent numerical results.

• 理論物理学刊行会の論文
• 2002-06-28

著者

• Kolezhuk Alexei

  Institut Fur Theoretische Physik Universitat Hannover

• Kolezhuk Alexei

  Institute Of Maqnetism National Academy Of Sciences And Ministry Of Education:institut Fur Theoretis

• Kolezhuk Alexei

  Institute of Maqnetism, National Academy of Sciences and Ministry of Education:Institut fur Theoretische Physik, Universitat Hannover

関連論文

• Field and Impurity Induced Ordering in Interacting Dimer Systems(Impurity and Pressure Effects, Field-Induced Phase Transitions and Dynamics in Quantum Spin Systems)
• Response Functions of Gapped Spin Systems in High Magnetic Field
• Large-S Approach to Chiral Phases in Frustrated Spin Chains

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