Magnetic Field-Induced Type-I Type-II Transition in (ZuMu)Se/(ZaBe)Se Spin Superlattices

Abstract

We have performed a magnetooptical study on spin superlattice structures fabricated on the basis of (ZnMn)Se/(ZnBe)Se. The band alignment of a Zn(0.91)Mn(0.09)Se/ Zn(0.972)Be(0.028)Se superlattice was found to undergo a type-I to type-Il transition for one of the exciton spin component. This spin superlattice formation manifests itself in an asymmetric Zeeman splitting of a spatially direct exciton resulting from a spin dependent change of the exciton binding energy. A pronounced broadening of the spatially direct exciton in reflectance and photoluminescence excitation spectra was observed when scattering in the (ZnBe)Se barriers becomes possible.

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Document Details

Document Type
Technical Report
Publication Date
Jun 18, 1999
Accession Number
ADP012943

Entities

People

  • B. Koenig
  • D. R. Yakovlev
  • T. Gerhard
  • U. Zehnder
  • W. Ossau

Organizations

  • Russian Academy of Sciences

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Absorption Spectra
  • Band Gaps
  • Dye Lasers
  • Electrons
  • Energy
  • Energy Bands
  • Excitation
  • Excitons
  • Magnetic Fields
  • Magnetic Properties
  • Quantum Wells
  • Reflectance
  • Scattering
  • Spectra
  • Transitions

Fields of Study

  • Physics

Readers

  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Microelectronics