Optical phonon-assisted tunneling in double quantum well structures

D. Y. Oberli, Jagdeep Shah, T. C. Damen, J. M. Kuo, J. E. Henry, Jenifer Lary, Stephen M. Goodnick

Research output: Contribution to journalArticle

82 Scopus citations

Abstract

Using subpicosecond time-resolved luminescence spectroscopy, we show that the tunneling rate for electrons in an asymmetric double quantum well structure changes dramatically as the energy separation between the two lowest conduction subbands of the coupled well system is tuned through the optical phonon energy. We model these experiments using an ensemble Monte Carlo simulation and obtain a good quantitative agreement between the two. These results demonstrate the importance of phonon-assisted tunneling processes and raise a number of interesting questions concerning the nature of phonons and carrier-phonon interactions in these structures.

Original languageEnglish (US)
Pages (from-to)1239-1241
Number of pages3
JournalApplied Physics Letters
Volume56
Issue number13
DOIs
StatePublished - Dec 1 1990
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Oberli, D. Y., Shah, J., Damen, T. C., Kuo, J. M., Henry, J. E., Lary, J., & Goodnick, S. M. (1990). Optical phonon-assisted tunneling in double quantum well structures. Applied Physics Letters, 56(13), 1239-1241. https://doi.org/10.1063/1.102525