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Title: Dynamic properties of magnets with spin S = 3/2 and non-Heisenberg isotropic interaction

The dynamic properties of a magnet with magnetic-ion spin of 3/2 and an isotropic spin interaction of a general form have been investigated. Only four phase states can be realized in the system under consideration at various relationships between the material parameters: the ferro- and antiferromagnetic phases with saturated spin and the states with tensor order parameters, the nematic and antinematic ones. For these phases, the spontaneous symmetry breaking is determined by the octupole order parameter containing the mean values trilinear in spin operator components at a given site. The spectra of elementary excitations have been determined in all phases. Additional branches of excitations arise in all four phase states.
Authors:
;  [1] ;  [2] ;  [3]
  1. Vernadsky Taurida National University (Russian Federation)
  2. National Academy of Sciences of Ukraine, Institute of Physics (Ukraine)
  3. National Academy of Sciences of Ukraine, Institute of Magnetism (Ukraine)
Publication Date:
OSTI Identifier:
22472388
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 120; Journal Issue: 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETIC MATERIALS; ANTIFERROMAGNETISM; EXCITATION; FERROMAGNETIC MATERIALS; FERROMAGNETISM; MAGNETS; OCTUPOLES; ORDER PARAMETERS; SPIN; SYMMETRY BREAKING; TENSORS