Magnetic field dependence of quadrupolar splitting and nuclear Spin coherence time in a strained (110) GaAs quantum well

Jun Ishihara, Masaaki Ono, Genki Sato, Shunichiro Matsuzaka, Yuzo Ohno, Hideo Ohno

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We investigated the magnetic field dependence of quadrupolar splitting and phase relaxation time of nuclear spins in an n-GaAs/AlGaAs (110) quantum well (QW) by optically detected nuclear magnetic resonance (NMR). The NMR spectra show large quadrupolar splitting induced by an internal field gradient in the QW epilayer. At lower magnetic fields, the quadrupolar splitting become much enhanced, resulting in the appearance of the second order magnetic field dependence of the quadrupole interaction in the NMR spectra. It is also shown that the intrinsic coherence time and the effective coherence time for resonant transitions become shorter as a result that the energy splitting between the two levels becomes small and incoherent transition is occurred by irradiation of an rf magnetic field.

Original languageEnglish
Article number04DM03
JournalJapanese journal of applied physics
Volume50
Issue number4 PART 2
DOIs
Publication statusPublished - 2011 Apr 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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