Acoustic-phonon limited mobility in periodically modulated quantum wires

J. E. Stocker, J. P. Leburton, H. Noguchi, H. Sakaki

Research output: Contribution to journalArticle

Abstract

We investigate acoustic-phonon scattering in quantum wires subject to a periodic potential along the propagating direction. A technique for modeling the electronic structure of the periodic system is introduced using the imaginary time propagation method. The acoustic-phonon scattering rate is evaluated by taking umklapp processes into account. We found umklapp processes can cause a significant increase in intersubband scattering but is negligible for intrasubband scattering. Overall, the exact treatment of the electron dispersion relation improves the acoustic-phonon limited mobility compared to earlier estimates [H. Noguchi, J. P. Leburton, and H. Sakaki, Phys. Rev. B 47, 15593 (1993)].

Original languageEnglish (US)
Pages (from-to)4231-4236
Number of pages6
JournalJournal of Applied Physics
Volume76
Issue number7
DOIs
StatePublished - Dec 1 1994

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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