On the semiconductor energy gap in density functional theory

H. Eschrig, K. A. Kikoin, V. G. Kohn

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The non-existence of the functional derivative of the Hohenberg-Kohn functional at the ground-state density of a semiconductor earlier discussed in the literature2,3 is analyzed. Arguments are given that this non-existence is not connected with the discontinuity of the (ordinary) derivative of the functional with respect to the particle number N as discussed by Perdew and Levy2.

Original languageEnglish
Pages (from-to)773-775
Number of pages3
JournalSolid State Communications
Issue number9
StatePublished - 1 Jan 1985
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


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