• G. V. Astakhov
  • M. M. Glazov
  • D. R. Yakovlev
  • E. A. Zhukov
  • W. Ossau
  • L. W. Molenkamp
  • M. Bayer

Experimental and theoretical studies of all-optical spin pump and probe of resident electrons in CdTe/(Cd,Mg)Te semiconductor quantum wells are reported. A two-color Hanle-MOKE technique (based on continuous-wave excitation) and time-resolved Kerr rotation in the regime of resonant spin amplification (based on pulsed excitation) provide a complementary measure of electron spin relaxation time. The influence of electron localization on long-lived spin coherence is examined by means of spectral and temperature dependences. Various scenarios of spin polarization generation (via the trion and exciton states) are analyzed and difference between continuous-wave and pulsed excitations is considered. Effects related to inhomogeneous distribution of g-factor and anisotropic spin relaxation time on measured quantities are discussed.

Original languageEnglish
Article number114001
JournalSemiconductor Science and Technology
Volume23
Issue number11
DOIs
StatePublished - 1 Dec 2008

    Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

ID: 36467062