Multiple-charge impurity states of the transition and noble metal ions in semiconductors

V. N. Fleurov, K. A. Kikoin

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Two possible ways of creating multiple-charge deep levels of d-metal ions in semiconductors are considered. The case of the different charge states corresponding to the different d-shell configurations is discussed with respect to transition-metal ions in AIIBVI and A IIIBV compounds. A model in which the double-charge states are created without d-valence change is proposed for noble metal impurities. In this case the wavefunction of the first electron in the impurity level is the superposition of the d shell and valence band states, and the wavefunction of the second localised electron is made only of the band states. The authors discuss also the occupation rules for the impurity levels and show that one obtains a wrong distribution function for the localised electron when one uses the Hartree approximation for the d-d correlation energy U. The true 'atomic' distribution function can be obtained including U in zero approximation.

Original languageEnglish
Article number019
Pages (from-to)61-77
Number of pages17
JournalJournal of Physics C: Solid State Physics
Volume12
Issue number1
DOIs
StatePublished - 1 Dec 1979
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering (all)
  • Physics and Astronomy (all)

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