Thermodynamic properties of dimeric mixed-valence compounds in a dynamic model of intermediate vibronic coupling

B. S. Tsukerblat, A. V. Palii, V. Ya Gamurar, A. S. Berengolts, H. M. Kishinevsky

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

An intermediate coupling basis set is applied to the Jahn-Teller problem of a mixed-valence cluster. The vibronic magnetic moments and heat capacity are calculated. Strong vibronic coupling favors the anti-ferromagnetic spin alignment so the value of ground state spin proves to be the result of competition between the double exchange, Heisenberg-type exchange and vibronic interaction. In some cases the adiabatic approach is shown to be inadequate for the ground state description.

Original languageEnglish
Pages (from-to)341-344
Number of pages4
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume158
Issue number6-7
DOIs
StatePublished - 9 Sep 1991
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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