Interface controlled electronic charge inhomogeneities in correlated heterostructures

For heterostructures of ultrathin, strongly correlated copper-oxide films and dielectric perovskite layers, we predict inhomogeneous electronic interface states. Our study is based on an extended Hubbard model for the cuprate film. The interface is implemented by a coupling to the electron and phono...

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Bibliographic Details
Published inPhysical review letters Vol. 97; no. 18; p. 187001
Main Authors Pavlenko, Natalia, Kopp, Thilo
Format Journal Article
LanguageEnglish
Published United States 03.11.2006
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Summary:For heterostructures of ultrathin, strongly correlated copper-oxide films and dielectric perovskite layers, we predict inhomogeneous electronic interface states. Our study is based on an extended Hubbard model for the cuprate film. The interface is implemented by a coupling to the electron and phonon degrees of freedom of the dielectric oxide layer. We find that electronic ordering in the film is associated with a strongly inhomogeneous polaron effect. We propose to consider the interfacial tuning as a powerful mechanism to control the charge ordering in correlated electronic systems.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.97.187001