6533b835fe1ef96bd129f354
RESEARCH PRODUCT
Semiclassical approximation in the magnetic problem of exchange-coupled mixed valence clusters
Boris TsukerblatBoris TsukerblatJuan J. Borrás-almenarH.m. KishenevskyEugenio Coronadosubject
Adiabatic theoremDelocalized electronValence (chemistry)Condensed matter physicsMagnetic momentChemistryQuantum mechanicsGeneral Physics and AstronomySemiclassical physicsPhysical and Theoretical ChemistryAdiabatic processMagnetic exchangeIondescription
Abstract The frameworks of the applicability of the semiclassical adiabatic approach suggested by Borras-Almenar, Coronado and Tsukerblat to the magnetic problem of mixed valence clusters are considered in a model taking into account magnetic exchange, double exchange and vibronic interaction. The results for the quantum-mechanical and semicalssical calculation of the temperature-variable magnetic moments are compared with those within the scope of the semiclassical approximation for the dimeric d 1 —d 2 clusters and trimeric d 1 —d 1 —d 2 systems with partial delocalization over a pair of ions. The semiclassical approach describes with high accuracy the temperature dependencies of the magnetic moments. Cases of the inapplicability of the semiclassical approach are pointed out.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1994-01-01 | Chemical Physics Letters |