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Periodic Anderson Model with d-f Interaction

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Hagymási I., Itai K., Sólyom J.
Acta Physica Polonica A
|
2012
|
vol. 121
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issue 5-6
1070-1072
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.
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