Metallic surface of a bipolaronic insulator

Abstract

We investigate the possibility that the surface of a strongly coupled electron-phonon system behaves differently from the bulk when the relevant parameters are inhomogeneous due to the presence of the interface. We consider parameter variations which make the surface either more metallic or more insulating than the bulk. While it appears impossible to stabilize a truly insulating surface when the bulk is metallic, the opposite situation can be realized. A metallic surface can indeed be decoupled from a bipolaronic insulator realized in the bulk.

Accepted to PRB

References in corpus (6)

• Ferromagnetic tendency at the surface of CE charge-ordered manganites
• Kondo proximity effect: How does a metal penetrate into a Mott insulator?
• Surface dead layer for quasiparticles near a Mott transition
• Polaron Crossover and Bipolaronic Metal-Insulator Transition in the Holstein model at half-filling
• Embedding approach for dynamical mean field theory of strongly correlated heterostructures
• Surface Polaron Formation in the Holstein model

Cited by in corpus (6)

• Dynamical mean-field theory of indirect magnetic exchange
• Surface effects in doping a Mott insulator
• Charge redistribution in correlated heterostuctures within nonequilibrium real-space dynamical mean-field theory
• Resonance Effects in Correlated Multilayer Heterostructures
• Inhomogeneous dynamical mean field theory of the small polaron problem
• Competition between reduced delocalization and charge transfer effects for a two-band Hubbard model