Exchange energy enhanced g-factors obtained from Landau fan diagrams at low magnetic fields

S. Nomura, H. Tamura, M. Yamaguchi, T. Akazaki, Y. Hirayama

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We report on measurement of the electron-hole effective g-factors (geff*) depending on electron filling factors ν from magnetophotoluminescence spectroscopy at low magnetic fields B<1 T in low electron density regime in a GaAs/Al0.33Ga0.67As-gated quantum well. Enhancement of geff* at odd ν is observed. The oscillatory behavior of geff* is compared with results of a theory that takes into account the lowest-order exchange interaction of the screened Coulomb interaction. Good agreement of the observed geff* with theoretical results is obtained except ν at around 3. The enhancement of geff* at even ν with decrease in electron density has not been observed.

Original languageEnglish
Article number085318
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number8
DOIs
Publication statusPublished - 2013 Feb 25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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