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RAS PhysicsЖурнал экспериментальной и теоретической физики Journal of Experimental and Theoretical Physics

  • ISSN (Print) 0044-4510
  • ISSN (Online) 3034-641X

DYNAMIC AND STATIC PROPERTIES OF A NON-HEISENBERG ANISOTROPIC ANTIFERROMAGNET AT NON-ZERO TEMPERATURE

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PII
10.31857/S0044451024010103-1
DOI
10.31857/S0044451024010103
Publication type
Article
Status
Published
Authors
E. A. Yarygina
  • Affiliation: Vernadsky Crimean Federal University
Yu. A Fridman
  • Affiliation: Vernadsky Crimean Federal University
Volume/ Edition
Volume 165 / Issue number 1
Pages
98-113
Abstract
In the mean-field approximation, the influence of both temperature and single-ion easy-axis anisotropy on the phase states and excitation spectra of a non-Heisenberg antiferromagnet with S = 1 is studied. The temperature dependences of vector and tensor order parameters are determined both in phases with vector and tensor order parameters. The dependence of excitation spectra on temperature and anisotropy constant has been studied. It is shown that at temperatures other than zero, an additional (non-relaxation) branch of excitations arises. The temperature dependence of the phase diagram has been studied.
Keywords
temperature antiferromagnet “easy plane” anisotropy non-Heisenberg exchange interaction
Date of publication
17.09.2025
Year of publication
2025
Number of purchasers
0
Views
68

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