Periodic Anderson Model with d-f Interaction

• Authors: I. Hagymási , K. Itai , J. Sólyom
• Languages of publication: EN

Abstracts

EN

We investigate an extended version of the periodic Anderson model where an interaction is switched on between the doubly occupied d- and f-sites. We perform variational calculations using the Gutzwiller trial wave function. We calculate the f-level occupancy as a function of the f-level energy with different interaction strengths. It is shown that the region of valence transition is sharpened due to the new interaction.

Keywords

EN

71.10.Fd; 71.27.+a; 75.30.Mb

Discipline

• 71.27.+a: Strongly correlated electron systems; heavy fermions
• 71.10.Fd: Lattice fermion models (Hubbard model, etc.)
• 75.30.Mb: Valence fluctuation, Kondo lattice, and heavy-fermion phenomena(see also 71.27.+a Strongly correlated electron systems, heavy fermions; for heavy-fermion superconductors, see 74.70.Tx)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1070-1072

Dates

published

2012-05

Contributors

author

I. Hagymási

• Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, P.O. Box 49, Budapest, H-1525, Hungary
• Institute of Physics, Eötvös University, Pázmány Péter sétány 1/A, H-1117, Budapest, Hungary

author

K. Itai

• Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, P.O. Box 49, Budapest, H-1525, Hungary

author

J. Sólyom

• Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, P.O. Box 49, Budapest, H-1525, Hungary

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Identifiers

DOI

10.12693/APhysPolA.121.1070