J. Phys. Colloques
Volume 49, Number C8, Décembre 1988Proceedings of the International Conference on Magnetism
|Page(s)||C8-711 - C8-712|
J. Phys. Colloques 49 (1988) C8-711-C8-712
EFFECT OF SYMMETRY AND CORRELATION OF CONDUCTION STATES ON THE INDIRECT MAGNETIC EXCHANGEM. Acquarone1, P. Monachesi2, 3 et P. Giannozzi2
1 Dipartimento di Fisica dell'Università, GNSM, 43100 Parma, Italy
2 IPT, Université de Lausanne, 1015 Lausanne, Switzerland
3 Dipartimento di Fisica, Università dell'Aquila, 67100 l'Aquila, Italy.
We investigate the indirect exchange interaction between localized moments via conduction bands. The origin of the exchange is assumed to be the Anderson s-f mixing mechanism appropriate to anomalous rare earth and light actinide systems. The conduction states originate from s-orbitals in a CsCl structure. Hubbard correlation in Hartree-Fock approximation is included. We perform calculations of the coupling constants between localised moments and obtain a characteristic relationship between the conduction electrons density of states and the magnetic transition temperature.