Existence of LRO in the Frustrated XXZ Model on the Square Lattice

Kenn Kubo; Ken–ichi Ohwi

doi:10.1143/jpsj.65.732

Journal of the Physical Society of Japan

Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015

Existence of LRO in the Frustrated XXZ Model on the Square Lattice

Kenn Kubo, Ken–ichi Ohwi

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Keywords: frustration, quantum spin system, square lattice, Néel long-range order, infrared bounds

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1996 Volume 65 Issue 3 Pages 732-735

DOI https://doi.org/10.1143/jpsj.65.732

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Abstract

We extend the proof for the existence of long-range order(LRO) in the frustrated XXZ model with nearest and next nearest neighbor interactions on the square lattice. It is shown that the Néel LRO exists in the frustrated XY model when frustration is weak.

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