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Role of correlated hopping in mixed valence phenomena

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Abstract.

Role of correlated hopping is studied using extended Falicov–Kimball model in a small cluster. A discontinuous insulator-to-metal transition is observed at a critical f-level energy. Transition is sharper for larger correlated hopping. In the specific heat curves a two-peak structure consisting of a sharp peak followed by a Schottky-type broad peak is exhibited. In a limited parameter region, some heavy-fermion like characteristics have been observed.

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Authors and Affiliations

  1. Department of Physics, University of Kalyani, Kalyani, 741 235, India

    N K GHOSH, S K BHOWMICK & N S MONDAL

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  1. N K GHOSH
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  2. S K BHOWMICK
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  3. N S MONDAL
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Correspondence to N K GHOSH.

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GHOSH, N.K., BHOWMICK, S.K. & MONDAL, N.S. Role of correlated hopping in mixed valence phenomena. Pramana - J Phys 76, 139–147 (2011). https://doi.org/10.1007/s12043-011-0003-9

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  • DOI: https://doi.org/10.1007/s12043-011-0003-9

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