Open AccessMagnetic and thermodynamic properties of the mixed-spin antiferromagnet Y2BaNiO5
Author(s) -
Hanjing Kong,
Lin Zhang,
Yaru Song
Publication year - 2006
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.55.4865
Subject(s) - antiferromagnetism , ground state , anisotropy , physics , condensed matter physics , spin (aerodynamics) , heisenberg model , specific heat , magnetic susceptibility , excitation , internal energy , thermodynamics , quantum mechanics
In this paper, within the frame of Green's function theory, we study the magnetic and thermodynamic properties of the mixed-spin antiferromagnet Y2BaNiO5 in the spin-1 one-dimensional anisotropic Heisenberg model. We find the correlation function, low-lying excitation, ground-state energy, specific heat and static susceptibility of Y2BaNiO5 for different values of exchange anisotropic parameter γ, and the results are in good agreement with experimental and numerical results.