Correlation Theory of Antiferromagnet Cr2O3 for T>TN |
| Z. Latacz Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Cracow, Poland |
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| A correlation theory is applied to two-sublattice antiferromagnet Cr2O3, for T>TN. This theory includes pair correlation effects in a self-consistent calculation of both static and dynamic properties. The two kinds of approximations are assumed: the two-pole approximation for the relaxation function of the random force and the mode-mode decoupling procedure for the static and dynamic higher-order quantities. The formulae for the static susceptibility, line-shape function and magnetic cross-section of the inelastic neutron scattering are given for the case of a non-Bravais two-sublattice antiferromagnet. |
| DOI: 10.12693/APhysPolA.92.403 PACS numbers: 75.40.Gb, 75.50.Ee, 25.40.Fq |