Interface controlled electronic variations in correlated heterostructures

Details Interface controlled electronic variations in correlated heterostructures Interface controlled electronic variations in correlated heterostructures

2009-09-11

arxiv.org/abs/0909.2155v2

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

An interface modification of LCMO-BTO superlattices was found to massively influence magnetic and magnetotransport properties. Moreover it determines the crystal structure of the manganite layers, changing it from orthorhombic (Pnma) for the conventional superlattice (cSL), to rhombohedral (R-3c) for the modified one (mSL). While the cSL shows extremely nonlinear ac transport, the mSL is an electrically homogeneous material. The observations go beyond an oversimplified picture of dead interface layers and evidence the importance of electronic correlations at perovskite interfaces.

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