Topological Spin Excitations of Heisenberg Antiferromagnets in Two Dimensions

1999/04/26 by Tai Kai Ng, Tai-Kai Ng · 24 citations
Physics and Astronomy · #Antiferromagnetism #Boson #Condensed matter physics #Dirac fermion #Fermion #Heisenberg model #Magnetic properties of thin films #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Topological Materials and Phenomena #Topology (electrical circuits) #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.82.3504

published in Physical Review Letters 82(17), 3504-3507 (American Physical Society) · Latex file, no figure

openalex publication_date 1999/04/26 · arxiv created 1999/05/10 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We discuss the construction and dynamics of vortexlike topological spin excitations in the Schwinger-boson description of Heisenberg antiferromagnets in two dimensions. The topological spin excitations are Dirac fermions (with gap) when spin value S is a half-integer. Experimental and theoretical implications of these excitations are being investigated.

Citations

• Low Temperature Behavior and Crossovers of the Square Lattice Quantum Heisenberg Antiferromagnet
• Supersymmetry in models with strong on-site Coulomb repulsion: Application to the Heisenberg model
• Anomalous Finite Size Spectrum in theS<mml:mspace/>=<mml:mspace/>1/2Two Dimensional Heisenberg Model

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