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首页> 外文期刊>Japanese journal of applied physics >Scanning Tunneling Spectroscopy Observation of Electronic Resonances Originating from 1×1 Potential on the Dense Pb Overlayer on Si(111)
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Scanning Tunneling Spectroscopy Observation of Electronic Resonances Originating from 1×1 Potential on the Dense Pb Overlayer on Si(111)

机译：扫描隧道光谱法观察Si（111）上密集Pb层上源自1×1电位的电子共振

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摘要

We use scanning tunneling spectroscopy (STS) to investigate the electronic structures of dense Pb overlayers of three phases grown on the Si(111) surface: the 1 × 1, 7~(1/2) ×3~(1/2), and stripe incommensurate (SIC) phases. Although their atomic structures are all very different, the STS spectra of all three phases show nearly identical oscillatory features with two resonance peaks. These resonances are not common quantum-well states; they are energy bands originating from the dominant 1 × 1 potential in these phases. However, the local electronic states found by STS show that the resonance peaks are modulated with the superstructure of the 7~(1/2) ×3~(1/2) phase, and that the resonance energy varies with the domains and the domain walls in the SIC phase.
机译：我们使用扫描隧道光谱（STS）来研究在Si（111）表面上生长的三相致密Pb覆盖层的电子结构：1×1、7〜（1/2）×3〜（1/2），条纹不相称（SIC）阶段。尽管它们的原子结构都非常不同，但所有三相的STS光谱均显示出几乎相同的振荡特征，并带有两个共振峰。这些共振不是常见的量子阱状态。它们是在这些阶段中源自占优势的1×1势能的能带。然而，通过STS发现的局部电子状态表明，共振峰由7〜（1/2）×3〜（1/2）相的上层结构调制，共振能量随畴和畴而变化。 SIC阶段的墙。

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  • 来源
    《Japanese journal of applied physics》 |2012年第1issue1期|p.015702.1-015702.4|共4页
  • 作者

    Shin-Ming Lu; Wen-Yuan Chan; Hsing-Yi Chou; Ya-Ping Chiu; Wei-Bin Su; Pei-Hong Chu; Chi-Lun Jiang; Chia-Seng Chang; Hsi-Lien Hsiao; Tien Tzou Tsong;

  • 作者单位

    Institute of Physics, Academia Sinica, Nankang, Taipei 115, Taiwan,Department of Physics, Tunghai University, Taichung 407, Taiwan;

    Institute of Physics, Academia Sinica, Nankang, Taipei 115, Taiwan;

    Institute of Physics, Academia Sinica, Nankang, Taipei 115, Taiwan;

    Department of Physics, National Sun Yat-sen University, Kaohsiung 804, Taiwan;

    Institute of Physics, Academia Sinica, Nankang, Taipei 115, Taiwan,Department of Physics, Tunghai University, Taichung 407, Taiwan;

    Institute of Physics, Academia Sinica, Nankang, Taipei 115, Taiwan;

    Institute of Physics, Academia Sinica, Nankang, Taipei 115, Taiwan;

    Institute of Physics, Academia Sinica, Nankang, Taipei 115, Taiwan;

    Department of Physics, Tunghai University, Taichung 407, Taiwan;

    Institute of Physics, Academia Sinica, Nankang, Taipei 115, Taiwan;

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