Electronic structure of CrN: A comparison between different exchange correlation potentials

A. S. Botana, F. Tran, V. Pardo, D. Baldomir, P. Blaha

Research output: Contribution to journalArticle

33 Scopus citations

Abstract

We report a series of electronic structure calculations for CrN using different exchange correlation potentials: PBE, LDA+U, the Tran-Blaha modified Becke-Johnson functional, and hybrid functionals. In every case, our calculations show that the onset of magnetism in CrN should be accompanied by a gap opening. The experimentally found antiferromagnetic order always leads to an insulating behavior. Our results give further evidence that the Tran-Blaha functional is very useful for treating the electronic structure of correlated semiconductors allowing a parameter-free description of the system. Hybrid functionals are also well capable of describing the electronic structure of CrN. The analysis of the system is complemented with our calculations of the thermopower that are in agreement with the experimental data.

Original languageEnglish (US)
Article number235118
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number23
DOIs
StatePublished - Jun 11 2012
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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