Effects of the nearest-neighbor coulomb interactions on the ground state of the periodic anderson model

Lamba, Sushil ; Kishore, R. ; Joshi, S. K. (1998) Effects of the nearest-neighbor coulomb interactions on the ground state of the periodic anderson model Physical Review B, 57 (10). pp. 5961-5965. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v57/i10/p5961_1

Related URL: http://dx.doi.org/10.1103/PhysRevB.57.5961

Abstract

The magnetic and nonmagnetic ground states of the periodic Anderson model with Coulomb interaction between f electrons on the nearest-neighbor (NN) sites are investigated using a variational method, which gives an exact calculation of the expectation values in the limit of infinite dimensions. It is shown that for a critical value of NN Coulomb interactions the magnetic ground state of the periodic Anderson model in the Kondo regime is unstable. Factors in terms of the physical processes responsible for instability of the magnetic ground state are also discussed. Our study indicates the importance of the NN Coulomb interactions for correlated two-band models.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:14413
Deposited On:12 Nov 2010 09:19
Last Modified:16 May 2016 23:24

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