Stress Evolution during Si(111)7×7 Surface Reconstruction

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  • ASAOKA Hidehito
    Advanced Science Research Center, Japan Atomic Energy Agency
  • UOZUMI Yuki
    Advanced Science Research Center, Japan Atomic Energy Agency Hitachi Power Solutions Co., Ltd.

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Other Title
  • Si(111)7×7 表面再構成過程のストレス変位
  • Si(111)7 × 7 ヒョウメン サイコウセイ カテイ ノ ストレス ヘンイ
  • Stress Evolution during Si(111)7×7 Surface Reconstruction

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Abstract

<p>We have focused on stress measurements of the reconstructed Si(111) 7×7 and the hydrogen (H)-terminated Si(111) 1×1 surfaces. In order to obtain information on both the surface stress and the surface structure simultaneously, we have combined the surface-curvature and the reflection high-energy electron-diffraction instrumentations in an identical ultrahigh vacuum system. The surface stress behaviors during desorption and adsorption processes of hydrogen on the Si(111) surfaces reveal that the Si(111) 1×1 surface releases 1.6∼1.7 N/m (= J/m2), or 1.3∼1.4 eV/ (1×1 unit cell), of the surface energy from the strong tensile Si(111) 7×7 reconstruction.</p>

Journal

  • Hyomen Kagaku

    Hyomen Kagaku 37 (9), 446-450, 2016

    The Surface Science Society of Japan

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