Competition between Magnetic-Field- and Electric-Field-Induced Localizations in GaAs/Ga(0.65)Al(0.35)As Superlattices

Abstract

We have observed that an in-plane magnetic field applied perpendicular to an electric field along the growth axis of GaAs/Ga(0.65)Al(0. 35)As superlattices causes the interband Stark transitions seen in photocurrent spectra to lose intensity and eventually to disappear. For sufficiently high magnetic fields, however, new transitions appear, which we interpret as transitions of magnetic origin. A calculation of the interband transitions that includes excitonic effects gives good agreement with the measured energies and intensities and shows that these results are due to a competition between magnetic-field- and electric-field-induced localizations.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 15, 1991
Accession Number
ADA261186

Entities

People

  • A. Alexandrou
  • E. E. Mendez
  • J. E. Sipe
  • J. M. Hong
  • M. M. Dignam

Organizations

  • IBM Thomas J. Watson Research Center

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Agreements
  • Competition
  • Dye Lasers
  • Electric Fields
  • Electrons
  • Excitons
  • Ground State
  • Intensity
  • Magnetic Fields
  • Probability
  • Quantum Wells
  • Semiconductors
  • Spectra
  • Superlattices
  • Transitions

Fields of Study

  • Physics

Readers

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

Technology Areas

  • Microelectronics