Band Anticrossing in GaInNAs Alloys

W. Shan, W. Walukiewicz, J. W. Ager, E. E. Haller, J. F. Geisz, D. J. Friedman, J. M. Olson, S. R. Kurtz

Research output: Contribution to journalArticlepeer-review

1621 Scopus Citations

Abstract

We present evidence for a strong interaction between the conduction band and a narrow resonant band formed by nitrogen states in Ga1-xInxNyAs1-y alloys. The interaction leads to a splitting of the conduction band into two subbands and a reduction of the fundamental band gap. An anticrossing of the extended states of the conduction band of the Ga1-xInx As matrix and the localized nitrogen resonant states is used to model the interaction. Optical transitions associated with the energy minima of the two subbands and the characteristic anticrossing behavior of the transitions under applied hydrostatic pressure have been unambiguously observed using photomodulation spectroscopy. The experimental results are in excellent quantitative agreement with the model.

Original languageAmerican English
Pages (from-to)1221-1224
Number of pages4
JournalPhysical Review Letters
Volume82
Issue number6
DOIs
StatePublished - 1999

NREL Publication Number

  • NREL/JA-520-26492

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