Quantum oscillations of the two-dimensional hole gas at atomically flat diamond surfaces

Yamaguchi Takahide*, Hiroyuki Okazaki, Keita Deguchi, Shinya Uji, Hiroyuki Takeya, Yoshihiko Takano, Hidetoshi Tsuboi, Hiroshi Kawarada

*この研究の対応する著者

研究成果: Article査読

26 被引用数 (Scopus)

抄録

Shubnikov-de Haas oscillations are observed in atomically flat hydrogen-terminated diamond surfaces with high-density hole carriers introduced by the electric field effect using an ionic liquid. The Shubnikov-de Haas oscillations depend only on the magnetic field component perpendicular to the diamond surface, thus providing evidence of two-dimensional Fermi surfaces. The effective masses estimated from the temperature dependence of the oscillations are close to the cyclotron effective masses of the valence band maxima in diamond. The estimated quantum scattering time is one order of magnitude longer than the transport scattering time and indicates that the carrier mobility is locally as high as several thousand cm2/V s at low temperature.

本文言語English
論文番号235304
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
89
23
DOI
出版ステータスPublished - 2014 6 4

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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