Current Instability and Shot Noise in Nanometric Semiconductor Heterostructures

Abstract

We investigate electron transport and shot noise in single barrier GaAs/AlGaAs heterostructure of nanometric sizes. The coupling between space charge and the dependence of the transmission coefficient on energy is found to provide the positive feedback which enhances shot noise and ultimately leads to a current instability of S-type. Theoretical results are in qualitative agreement with existing experiments and confirm recent Monte Carlo simulations evidencing shot-noise enhancement in GaAs/AlGaAs heterostructures.

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Document Details

Document Type
Technical Report
Publication Date
Jun 23, 2000
Accession Number
ADP013135

Entities

People

  • A. Reklaitis
  • L. Reggiani
  • V

Organizations

  • Semiconductor Physics Institute

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Electrons
  • Feedback
  • Free Electrons
  • High Voltage
  • Instability
  • Materials
  • Nanostructures
  • Particles
  • Phase Transformations
  • Physics
  • Saturation
  • Semiconductor Physics
  • Semiconductors
  • Shot Noise
  • Space Charge
  • Technical Information Centers
  • Transport Ships

Fields of Study

  • Materials science

Readers

  • Electronics Engineering
  • Powder metallurgy of Titanium alloys.
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics
  • Space
  • Space - Space Objects