Quantum Transport of an Electron Wave Packet Across a Heterostructure Discontinuity: Applications in the GaAs/Al sub x Ga sub 1-xAs Heterosystem,

Abstract

A formalism is presented to study quantum transport properties of electrons in semiconductor heterostructures. The time evolution of multiband electronic states is determined by numerically solving the time dependent Schroedinger equation in the tight-binding representation. We have studied the transport of an electron wavepacket injected from AlxGa1-xAs across Gamma-Gamma and Gamma-X discontinuities into GaAs. The gross transport properties of the transmitted wavepacket are altered within a time scale of the order of 100 fs.

Document Details

Document Type
Technical Report
Publication Date
May 22, 1992
Accession Number
ADP007674

Entities

People

  • Jasprit Singh
  • Vasu Sankaran

Organizations

  • University of Michigan

Tags

DTIC Thesaurus Topics

  • Compound Semiconductors
  • Discontinuities
  • Electronic States
  • Electronics
  • Electrons
  • Equations
  • Heterojunctions
  • Mathematics
  • Optoelectronics
  • Personal Information Managers
  • Picosecond Time
  • Semiconductors
  • Solid State Electronics
  • Transport Properties
  • Transport Ships
  • Wave Packets

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Plasma Physics / Magnetohydrodynamics
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Quantum Computing