Electron and Nuclear Spin Interactions in the Optical Spectra of Single GaAs Quantum Dots

Abstract

Fine and hyperfine splittings arising from electron, hole, and nuclear spin interactions in the magnetooptical spectra of individual localized excitons are studied. We explain the magnetic field dependence of the energy splitting through competition between Zeeman, exchange, and hyperfine interactions. An unexpectedly small hyperfine contribution to the splitting close to zero applied field is described well by the interplay between fluctuations of the hyperfine field experienced by the nuclear spin and nuclear dipole/dipole interactions.

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Document Details

Document Type
Technical Report
Publication Date
May 28, 2001
Accession Number
ADA483718

Entities

People

  • Al. L. Efros
  • D. Gammon
  • D. Scott Katzer
  • Doewon Park
  • I. A. Merkulov
  • Michelle Rosen
  • S. W. Brown
  • T. A. Kennedy
  • V. L. Korenev

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Depolarization
  • Diffraction
  • Electrons
  • Heterojunctions
  • Magnetic Fields
  • Nuclear Resonance
  • Nuclear Spins
  • Nuclei
  • Optical Phenomena
  • Perturbation Theory
  • Polarization
  • Quantum Dots
  • Quantum Properties
  • Quantum Wells
  • Scattering
  • Spectra
  • Spectral Lines

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Molecular Photonics/Laser Physics
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Quantum Computing
  • Quantum Science - Quantum Dots