Magnetic quantum oscillations in In0.53Ga0.47As/In0.52Al0.48As multiquantum well observed by millimeter wave response

Hiroshi Matsui, Masaki Narushima, Yuichi Kawamura, Naohisa Inoue, Satoshi Endo, Hiroshi Uozaki, Naoki Toyota

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1 Citation (Scopus)

Abstract

We report on millimeter wave measurements of an In0.53Ga0.47As/In0.52Al0.48As multiquantum well fabricated by gas source molecular beam epitaxy. Transmission experiments with the millimeter waves (16-110 GHz) were carried out as a function of the magnetic field up to 10 T at temperatures down to 0.6 K. The quantum oscillations corrresponding to the Shubnikov-de Haas effect are observed in the amplitude and phase of the transmitting waves. The effective mass can be estimated as 0.058m0 for the 1st-subband electron. In spite of a small Fermi energy of 27 meV for the 1st subband, the enhancement of an effective mass is 30% over the bulk band-edge mass of 0.041m0. The large difference originates from the resonant polaron coupling due to a fundamental GaAs-like LO-phonon in addition to the band nonparabolicity of the In0.53Ga0.47As well.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume36
Issue number10 PART A
Publication statusPublished - 1997 Oct 1
Externally publishedYes

Keywords

  • Band nonparabolicity
  • InGaAs/InAlAs
  • Millimeter wave
  • Multiquantum well
  • Polaron effect
  • Quantum oscillation
  • Shubnikov-de Haas effect

ASJC Scopus subject areas

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

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