scholarly journals Interplay between strong correlations and magnetic field in the symmetric periodic Anderson model

2008 ◽  
Vol 78 (3) ◽  
Author(s):  
Debabrata Parihari ◽  
N. S. Vidhyadhiraja ◽  
David E. Logan
Keyword(s):  
Magnetic Field ◽  
Anderson Model ◽  
Strong Correlations ◽  
Periodic Anderson Model

scholarly journals Momentum Distribution Functions in a One-Dimensional Extended Periodic Anderson Model

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
I. Hagymási ◽  
J. Sólyom ◽  
Ö. Legeza
Keyword(s):  
Momentum Distribution ◽  
Anderson Model ◽  
Mixed Valence ◽  
Distribution Functions ◽  
Strong Correlations ◽  
Periodic Anderson Model ◽  
One Dimensional ◽  
Conduction Electrons ◽  
Localized Electrons

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

scholarly journals Suppressed HF Behaviour in the Periodic Anderson Model

2018 ◽  
Vol 14 (12) ◽  
pp. 241
Author(s):  
Okunzuwa I. S. ◽  
Arthur I. I. Ejere
Keyword(s):  
Magnetic Field ◽  
Specific Heat ◽  
Anderson Model ◽  
Heavy Fermion ◽  
Nearest Neighbors ◽  
Periodic Anderson Model ◽  
Many Body ◽  
The Many ◽  
Heavy Fermion Behavior ◽  
The Magnetic Field

The periodic Anderson model is applied to 4 electrons on 4 sites with periodic boundary conditions. We applied magnetic field to the localized forbitals, Eσf. The number of electrons is taken to be one per site and the interactions between different sites is restricted to nearest neighbors. The many body eigenvalues are calculated exactly using exact diagonalization technique. We find that the specific heat is suppressed by the variation of the band energy of the localized f-orbitals as mediated by the application of the magnetic field, H, under various hybridization energy. A continuous suppression of the specific heat reduces the heavy fermion behavior in the system.

Superconducting instability in the periodic Anderson model

1998 ◽  
Vol 78 (4) ◽  
pp. 365-374 ◽  
Author(s):  
A. N.Tahvildar-Zadeh, M. H. Hettler, M
Keyword(s):  
Anderson Model ◽  
Periodic Anderson Model
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