Electric Field Dependent Dimensionality of Excitonic States in Single Quantum Well Structures with Asymmetric Barriers

Abstract

2D-3D transformation of excitonic states dimensionality with an external electric field parallel to the growth axis has been observed in GaAs/Al(x)Ga(1-x)As single quantum well (QW) structures with asymmetric barriers. When the maximum of electronic wavefunction shifts to the lower barrier with field, the exciton binding energy starts to decrease. With further increase of field the transformation of 2D exciton to the quasi-3D exciton takes place. The latter involves a heavy hole in QW and an electron of resonant above-barrier state.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1998
Accession Number
ADP012810

Entities

People

  • A. E. Tyurin
  • I. P. Kazakov
  • V. V. Kapaev
  • Yu. A. Aleshchenko
  • Yu. V. Kopaev

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Conduction Bands
  • Continuous Spectra
  • Electric Fields
  • Electrodes
  • Electronic States
  • Electrons
  • Energy Bands
  • Excitons
  • Hard Copy
  • Nanostructures
  • Physics
  • Quantum Wells
  • Spectra
  • Technical Information Centers
  • Variational Methods
  • Wave Functions

Fields of Study

  • Materials science

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Operations Research
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics
  • Quantum Computing
  • Quantum Science - Quantum Dots