Acousto-Electric Transport Through a Two-Dimensional System in the Nonlinear Regime

Abstract

Surface acoustic waves strongly interact with a two-dimensional electron plasma in hybrid semiconductor piezoelectric structures. At high intensities of a surface acoustic wave. nonlinear effects play the main role: the plasma turns into moving electron stripes. the acousto-electric current reaches its maximum, and the absorption of the sound wave is strongly suppressed. The interaction between the surface acoustic wave and the photo-generated cairiers results in ionization and drag of excitons. The electron-hole pairs are effectively trapped in the moving potential of the sound wave and then re-assembled into photonic signals. The photoluminescence intensity in the presence of a sound wave strongly depends on t%e excitation because of screening. Together with experimental data, we present a theoretical description of nonlinear phenomena using hydrodynamic approach.

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Document Details

Document Type
Technical Report
Publication Date
Jun 18, 1999
Accession Number
ADP012893

Entities

People

  • A. O. Govorov
  • A. V. Kalamseitsev
  • C. Rocke
  • M. Rotter
  • M. Streibl

Organizations

  • Russian Academy of Sciences

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Acoustic Propagation
  • Acoustic Waves
  • Amplitude
  • Detection
  • Electron Density
  • Electron Gas
  • Electron Holes
  • Electron Mobility
  • Electrons
  • Free Electrons
  • Semiconductors
  • Sound Waves
  • Surface Acoustic Wave Devices
  • Surface Acoustic Waves
  • Two Dimensional
  • Waves

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Materials Science and Engineering.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems