The metallic interface between the two band insulators LaGaO3 and SrTiO3 | Zendy

Safdar Nazir | Zendy; Nirpendra Singh | Zendy; Udo Schwingenschlögl | Zendy

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The metallic interface between the two band insulators LaGaO3 and SrTiO3

Author(s) -

Safdar Nazir,

Nirpendra Singh,

Udo Schwingenschlögl

Publication year - 2011

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3604020

Subject(s) - materials science , doping , interface (matter) , condensed matter physics , metal , electronic band structure , conductivity , density functional theory , plane (geometry) , electronic structure , plane wave , chemistry , composite material , optoelectronics , computational chemistry , metallurgy , physics , optics , mathematics , capillary number , capillary action , geometry

The formation of metallic interface states between the two band insulators LaGaO3 and SrTiO3 is studied by the full-potential linearized augmented plane-wave method based on density functional theory.Structural optimization of the atomic positions points to only small changes of the chemical bonding at the interface. The n-type (LaO/TiO2) and p-type (GaO2/SrO) interfaces turn out to be metallic. Reduction of the O content increases the conductivity of the n-type interface, while the p-type interface can be turned gradually from a hole doped into an electron doped state

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