Spin and mixed spin-and-orbital excitations in KCuF3

We investigate the effective spin‐orbital superexchange model for KCuF3 including the superexchange term due to charge‐transfer excitations. We investigate the spin wave and spin‐and‐orbital wave excitations using the bosonic representation of spin and orbital operators for the antiferromagnetic gro...

Full description

Saved in:
Bibliographic Details
Published in:Physica Status Solidi (b) 2006-01, Vol.243 (1), p.133-136
Main Authors: Sikora, O., Oleś, A. M.
Format: Article
Language:English
Subjects:
71.27.+a
75.30.Ds
75.30.Et
75.50.Ee
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Exchange and superexchange interactions
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Physics
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We investigate the effective spin‐orbital superexchange model for KCuF3 including the superexchange term due to charge‐transfer excitations. We investigate the spin wave and spin‐and‐orbital wave excitations using the bosonic representation of spin and orbital operators for the antiferromagnetic ground state with the ferro‐type of orbital order of occupied eg orbitals. It is shown that antiferromagnetic order is stabilized either by the charge‐transfer superexchange or by the crystal field splitting of the eg energy levels. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:0370-1972
1521-3951
DOI:10.1002/pssb.200562405