Surface versus bulk Mott transition in Ca_xLa_1-xVO₃

2003/01/28 by A. Liebsch, Liebsch, A.
Physics and Astronomy · #FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.cond-mat/0301537

5 pages, 4 figures

arxiv created 2003/01/28 · arxiv updated 2009/11/30

Abstract

The Mott insulator LaVO₃ is known to become metallic if La is replaced by small concentrations of Ca. Since surface quasi-particle spectra of various perovskites are more strongly correlated than their bulk spectra, the coexistence of a metallic bulk and an insulating surface layer might be feasible. To investigate this possibility the dynamical mean field theory is used to evaluate the quasi-particle spectra in the bulk and at the surface of Ca_xLa_1-xVO₃ for various Ca concentrations.

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