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Title: Quadrupolar Order in the Quantum XY Model with Cubic Anisotropy
Authors: Harada, Kenji  kyouindb  KAKEN_id
Kawashima, Naoki
Author's alias: 原田, 健自
Issue Date: 1-Jan-2002
Publisher: Oxford University Press
Journal title: Progress of Theoretical Physics Supplement
Volume: 145
Start page: 194
End page: 199
Abstract: We present a new algorithm for the quantum S=1 XY model with cubic anisotropy. In two dimensions, by studying the behaviour of the quadrupolar moment, we find the magnitude of the anisotropy at which a presumably ferromagnetic phase terminates. This point coincides with the phase boundary between the ferromagnetic phase and the quadrupolar phase determined by the mean-field theory. However, in contrast to the mean-field prediction, there is no quadrupolar phase just above the phase boundary.
Description: Published on behalf of Journal of the Physical Society of Japan
Rights: (c) 2002 Progress of Theoretical Physics
DOI(Published Version): 10.1143/PTPS.145.194
Appears in Collections:Journal Articles

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