Periodic Anderson model with electron-phonon correlated conduction band

Abstract

This paper reports dynamical mean field calculations for the periodic Anderson model in which the conduction band is coupled to phonons. Motivated in part by recent attention to the role of phonons in the $\gamma$-$\alpha$ transition in Ce, this model yields a rich and unexpected phase diagram which is of intrinsic interest. Specifically, above a critical value of the electron-phonon interaction, a first order transition with two coexisting phases develops in the temperature-hybridization plane, which terminates at a second order critical point. The coexisting phases display the familiar Kondo screened and local moment character, yet they also exhibit pronounced polaronic and bipolaronic properties, respectively.

4 pages, 6 figures

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Cited by in corpus (7)

• A multi-orbital iterated perturbation theory for model Hamiltonians and real material-specific calculations of correlated systems
• Effects of an Additional Conduction Band on Singlet-Antiferromagnet Competition in the Periodic Anderson Model
• Inelastic electron tunneling spectroscopy for probing strongly correlated many-body systems by scanning tunneling microscopy
• Superconducting Kondo phase in an orbitally-separated bilayer
• Protracted Kondo coherence with dilute carrier density in Cerium based nickel pnictides
• Schwinger-Dyson Equation Method to Calculate Total Energy in Periodic Anderson Model with Electron-Phonon Interactions
• Periodic Anderson model with Holstein phonons for the description of the Cerium volume collapse