Size effects in multisubband quantum wire structures

S. Briggs, J. P. Leburton

Research output: Contribution to journalArticlepeer-review

Abstract

We present a Monte Carlo simulation of multisubband quasi-one-dimensional GaAs-AlxGa1-xAs structures. The simulation includes polar-optical-phonon and inelastic acoustic-phonon scattering and investigates the effect of changing confinement on electron velocity. Even at low longitudinal fields, for confinements in the range 50230 A, intersubband scattering has a profound effect on transport parameters. Under optimum conditions, differential mobility in excess of twice the bulk value at 300 K is obtained. Asymmetric geometry and high degree of confinement result in interesting differences from magnetotransport. In addition, resonance analogous to the magnetophonon effect occurs when the separation between lowest subbands is equal to the polar-optical-phonon energy.

Original languageEnglish (US)
Pages (from-to)8163-8170
Number of pages8
JournalPhysical Review B
Volume38
Issue number12
DOIs
StatePublished - 1988

ASJC Scopus subject areas

  • Condensed Matter Physics

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