Néel and Spin-Peierls Ground States of Two-DimensionalSU(N)Quantum Antiferromagnets

2002/10/03 by Kenji Harada, Naoki Kawashima, Matthias Troyer · 2 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #cond-mat.stat-mech #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.90.117203

published as Phys. Rev. Lett. 90, 117203 (2003) · 4 pages, 4 figures

arxiv created 2002/10/03 · openalex publication_date 2003/03/19 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The two-dimensional SU(N) quantum antiferromagnet, a generalization of the quantum Heisenberg model, is investigated by quantum Monte Carlo simulations. The ground state for N<or=4 is found to be of the Néel type with broken SU(N) symmetry, whereas it is of the Spin-Peierls type for N>or=5 with broken lattice translational invariance. Our computation of the magnetization and the dimerization order parameter shows the absence of the intermediate spin-liquid phase.

Citations

• Topologically protected quantum bits using Josephson junction arrays

Cited by

• Zigzag antiferromagnets in the SU(3) Hubbard model on the square lattice
• Quantum phase transition in the SU(4) spin-orbital model on the triangular lattice

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