Armenian Journal of Physics

d-f EXCHANGE INTERACTION INDUCED VALENCE TRANSITION IN MIXED-VALENCE SYSTEMS

Mukherjee, Piuli and Bhowmick, S.K. and Ghosh, N.K. (2012) d-f EXCHANGE INTERACTION INDUCED VALENCE TRANSITION IN MIXED-VALENCE SYSTEMS. Armenian Journal of Physics, 5 (2). pp. 75-80. ISSN 1829-1171

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Abstract

Role of exchange interaction is studied using extended Falicov–Kimball model. A discontinuous valence transition is observed at a critical f-level energy. Transition is sharper for smaller exchange interaction. A double-peak structure in specific heat appears for E<=Ec. For antiferromagnetic type of exchange interaction, a Curie contribution to the susceptibility is observed.

Item Type:Article
Subjects:Physics > 10.The physics of elementary particles and fields
ID Code:491
Deposited By:Prof. Vladimir Aroutiounian
Deposited On:11 Jul 2012 17:04
Last Modified:11 Jul 2012 17:04

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