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arXiv · 1505.02115

Momentum distribution functions in a one-dimensional extended periodic Anderson model

I. Hagymasi·J. Solyom·O. Legeza
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Abstract

We study the momentum distribution of the electrons in an extended periodic Anderson model, where the interaction, $U_{cf}$, between itinerant and localized electrons is taken into account. In the symmetric half-filled model, due to the increase of the interorbital interaction, the $f$ electrons become more and more delocalized, while the itinerancy of conduction electrons decreases. Above a certain value of $U_{cf}$ the $f$ electrons become again localized together with the conduction electrons. In the less than half-filled case, we observe that $U_{cf}$ causes strong correlations between the $f$ electrons in the mixed valence regime.

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I. Hagymasi, J. Solyom, O. Legeza. 2015-05-08. Momentum distribution functions in a one-dimensional extended periodic Anderson model. https://doi.org/10.1155/2015%2F614017

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