Abstract
A new type of excitation in spinel systems exhibiting the co-operative Jahn-Teller effect is suggested. The Hamiltonian of the considered system is expressed in terms of the pseudospin space. It si then possible to use the standard methods of the spin-wave theory for the determination of the excitation spectrum. The influence of the excitations on the temperature dependence of the co-operative effect is briefly discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Novák P.: J. Phys. Chem. Soc. (to be published).
Novák P.: ibid.
O'Brien M. C. M.: Proc. Roy. Soc.A281 (1964), 323.
Goldstone J.: Nuovo Cimento19 (1961), 154. For application to the nonrelativistic problems see e.g.
Lange R. V.: Phys. Rev.146 (1966), 301.
The pseudospin formalism was first used in this connection by Kanamori J.: J. Appl. Phys.31 (1960), 14 S.
Tyablikov S. V.: Methods in the Quantum Theory of Magnetism. Plenum Press Inc., N. York 1967, § 13.
Wojtowicz P. J.: Phys. Rev.116 (1959), 32.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Novák, P. Collective excitations in spinel systems exhibiting the co-operative Jahn-Teller effect. Czech J Phys 20, 196–201 (1970). https://doi.org/10.1007/BF01697115
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01697115