First-principles calculations of many-body band-gap narrowing at an Al/GaAs(110) interface

R.W. Godby; J.P.A. Charlesworth; R.J. Needs

doi:10.1103/PhysRevLett.70.1685

First-principles calculations of many-body band-gap narrowing at an Al/GaAs(110) interface

R.W. Godby, J.P.A. Charlesworth, R.J. Needs

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We calculate the quasiparticle electronic structure of a Al/GaAs(110) Schottky barrier as a function of distance from the interface, using the GW self-energy operator. The GaAs band gap is significantly narrowed near the metal, although the classical picture of image-potential narrowing is subject to large quantum corrections. The nature of these corrections is explored further using model calculations.

Original language	English
Pages (from-to)	1685-1688
Number of pages	3
Journal	Physical Review Letters
Volume	70
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.70.1685
Publication status	Published - 15 Mar 1993

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10.1103/PhysRevLett.70.1685

Cite this

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title = "First-principles calculations of many-body band-gap narrowing at an Al/GaAs(110) interface",

abstract = "We calculate the quasiparticle electronic structure of a Al/GaAs(110) Schottky barrier as a function of distance from the interface, using the GW self-energy operator. The GaAs band gap is significantly narrowed near the metal, although the classical picture of image-potential narrowing is subject to large quantum corrections. The nature of these corrections is explored further using model calculations.",

author = "R.W. Godby and J.P.A. Charlesworth and R.J. Needs",

note = "{\textcopyright} 1993 American Physical Society.",

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AU - Charlesworth, J.P.A.

AU - Needs, R.J.

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AB - We calculate the quasiparticle electronic structure of a Al/GaAs(110) Schottky barrier as a function of distance from the interface, using the GW self-energy operator. The GaAs band gap is significantly narrowed near the metal, although the classical picture of image-potential narrowing is subject to large quantum corrections. The nature of these corrections is explored further using model calculations.

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