Electronic interaction in trimeric mixed valence clusters

Autor:	M. I. Belinskii
Rok vydání:	1987
Předmět:	Valence (chemistry) Spins Condensed matter physics Chemistry Exchange interaction Biophysics Electron Symmetry group Condensed Matter Physics Molecular physics Coincidence Ion Irreducible representation Physical and Theoretical Chemistry Molecular Biology
Zdroj:	Molecular Physics. 60:793-819
ISSN:	1362-3028 0026-8976
Popis:	The theory of double exchange is generalized to mixed valence (MV) trinuclear clusters. The results obtained by quantum-theoretical calculations of exchange and resonance splittings are compared to the results of the model theory which takes account of Heisenberg and double exchange. The comparison demonstrates unambiguously the coincidence of transfer parameters and the model double exchange parameters. The double exchange parameters of trinuclear MV clusters depend on total and intermediate spins as well as individual ion spin. The common effect of electron (or hole) migration and interion exchange interaction on the magnetic properties of dn -dn -d n+1 (n = 0, 1, 2, 3, 4, 5) and dn -dn -d n-1 (n = 1, 2, 3, 4) MV trimers is considered. Heisenberg and double exchange form exchange-resonance multiplets which are characterized by irreducible representations Γ of D 3h symmetry group of MV clusters. Double exchange splits Heisenberg multiplets but does not mix the states of different S. Level correlation dia...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2affdb7f4c5140eca328afc7b29ea7ed https://doi.org/10.1080/00268978700100551 Zobrazit plný text záznamu