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Interface controlled electronic charge inhomogeneities in correlated heterostructures

Natalia Pavlenko·Thilo Kopp
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Abstract

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.

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Natalia Pavlenko, Thilo Kopp. 2006-09-17. Interface controlled electronic charge inhomogeneities in correlated heterostructures. https://doi.org/10.1103/physrevlett.97.187001

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