Open AccessSPIN WAVE APPROACH FOR X-Y-Z MODEL——A STUDY OF THE ANISOTROPIC HEISENBERG ANTIFERROMAGNET
Author(s) -
何兵,
应和平,
季达人
Publication year - 1996
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.45.522
Subject(s) - physics , antiferromagnetism , hamiltonian (control theory) , spin wave , heisenberg model , dispersion relation , canonical transformation , anisotropy , parity (physics) , ground state , quantum mechanics , condensed matter physics , ferromagnetism , mathematics , mathematical optimization , quantum
A spin wave approach to study the anisotropic Heisenberg antiferromagnet is presented. By means of introducing a parity operator and canonical transformations, the Hamiltonian is diagonized, based on the Holstein-Primakoff transformation, to obtain dispersion relations of the spin waves. The terms of non-linear approximation effects for the ground state energy and the dispersion relations are also shown.