Confinement-induced valence-band mixing in CdS quantum dots observed by two-photon spectroscopy

K. I. Kang, B. P. McGinnis, Sandalphon, Y. Z. Hu, Stephan W Koch, Nasser N Peyghambarian, A. Mysyrowicz, L. C. Liu, S. H. Risbud

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Abstract

One- and two-photon absorption spectra of the quantum-confined transitions of CdS quantum dots are reported. The results show significant deviations from calculations based on the parabolic-valence-band approximation. The near-degenerate one- and two-photon transitions observed experimentally, and confirmed theoretically using Luttinger theory and numerical matrix diagonalization, clearly demonstrate the effects of valence-band mixing and Coulomb interaction.

Original languageEnglish (US)
Pages (from-to)3465-3468
Number of pages4
JournalPhysical Review B
Volume45
Issue number7
DOIs
Publication statusPublished - 1992

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ASJC Scopus subject areas

  • Condensed Matter Physics

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