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Accurate Band Gaps of Semiconductors and Insulators with a Semilocal Exchange-Correlation Potential

Tran, Fabien, Blaha, Peter·2009·Physical Review Letters

Abstract

A modified version of the exchange potential proposed by Becke and Johnson [J. Chem. Phys. 124, 221101 (2006)10.1063/1.2213970] is tested on solids for the calculation of band gaps. The agreement with experiment is very good for all types of solids we considered (e.g., wide band gap insulators, sp semiconductors, and strongly correlated 3d transition-metal oxides) and is of the same order as the agreement obtained with the hybrid functionals or the GW methods. This semilocal exchange potential, which recovers the local-density approximation (LDA) for a constant electron density, mimics very well the behavior of orbital-dependent potentials and leads to calculations which are barely more expensive than LDA calculations. Therefore, it can be applied to very large systems in an efficient way.

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Metadata

Authors
Tran, F., & Blaha, P.
Venue
Physical Review Letters
Published
2009-06-03
Volume
102
Issue
22
Pages
226401-226401
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2017805851
Cited by
6,070
References
2
FWCI
33.64
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Accurate Band Gaps of Semiconductors and Insulators with a Semilocal Exchange-Correlation Potential. https://app.cochat.ai/papers/10.1103/physrevlett.102.226401
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Tran, F., & Blaha, P. (2009). Accurate Band Gaps of Semiconductors and Insulators with a Semilocal Exchange-Correlation Potential. Physical Review Letters. https://doi.org/10.1103/physrevlett.102.226401

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