Interface controlled electronic charge inhomogeneities in correlated heterostructures

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.

5 pages, 4 figures, to appear in Physical Review Letters

References in corpus (2)

• A `checkerboard' electronic crystal state in lightly hole-doped Ca_{2-x}Na_{x}CuO_{2}Cl_{2}
• Electrostatic interface tuning in correlated superconducting heterostructures

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• The effect of Coulomb interaction at ferromagnetic-paramagnetic metallic perovskite junctions