Using the dynamical mean field theory we show that an electron - phonon interaction can revert the energetic balance between the metallic state and the Mott insulator in the density-driven metal-insulator transition at zero temperature. We present results for the Hubbard - Holstein model where the Mott ground state is found for sufficiently high values of the electron - phonon coupling but still not in the polaronic regime. (C) 2003 Elsevier B. V. All rights reserved. RI Capone, Massimo/A-7762-2008

The effects of the electron-phonon interaction on a Mott insulator

Capone, Massimo;
2004-01-01

Abstract

Using the dynamical mean field theory we show that an electron - phonon interaction can revert the energetic balance between the metallic state and the Mott insulator in the density-driven metal-insulator transition at zero temperature. We present results for the Hubbard - Holstein model where the Mott ground state is found for sufficiently high values of the electron - phonon coupling but still not in the polaronic regime. (C) 2003 Elsevier B. V. All rights reserved. RI Capone, Massimo/A-7762-2008
2004
272
E301
E302
Capone, Massimo; Sangiovanni, G.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/14061
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