Nonlinear Absorption of Surface Acoustic Waves by Composite Fermions

Abstract

Absorption of surface acoustic waves by a two-dimensional electron gas in a perpendicular magnetic field is considered. The structure of such system at the filling factor nu close to 1/2 can be understood as a gas of composite fermions. It is shown that the absorption at nu = 1/2 can be strongly nonlinear while small deviation from 1/2 will restore the linear absorption. Study of nonlinear absorption allows one to determine the force acting upon the composite fermions from the acoustic wave at turning points of their trajectories.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2001
Accession Number
ADP013302

Entities

People

  • J. Bergli
  • Y. M. Galperin

Organizations

  • University of Oslo

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Acoustic Properties
  • Acoustic Waves
  • Boltzmann Equation
  • Distribution Functions
  • Electron Density
  • Electron Gas
  • Electrons
  • Equations
  • Fermions
  • Lepidoptera
  • Magnetic Fields
  • Surface Acoustic Wave Devices
  • Surface Acoustic Waves
  • Two Dimensional
  • Waves

Fields of Study

  • Physics

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Spectroscopy.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene