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Interfacial properties at the organic-metal interface probed using quantum well states

机译：使用量子阱态探测有机金属界面的界面性质

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摘要

Using angle-resolved photoemission spectroscopy, we investigated the interfacial properties between the long-chain normal-alkane molecule n-CH_3(CH_2)_(42)CH_3 [tetratetracontane (TTC)] and uniform Ag films using the Ag quantum well states. The entire quantum well state energy band dispersions were observed to shift toward the Fermi level with increasing adsorption coverage of TTC up to 1 monolayer (ML). However, the energy shifts upon deposition of 1 ML of TTC are approximately inversely dependent on the Ag film thickness, indicating a quantum-size effect. In the framework of the pushback and image-force models, we applied the Bohr-Sommerfeld quantization rule with the modified Coulomb image potential for the phase shift at the TTC/Ag interface to extract the dielectric constant for 1 ML of TTC.
机译：使用角分辨光发射光谱，我们利用Ag量子阱态研究了长链正构烷烃分子n-CH_3（CH_2）_（42）CH_3 [tetratetracontane（TTC）]与均匀Ag膜之间的界面性质。随着TTC吸附覆盖率的增加，整个量子阱态能带分散体向费米能级移动，直至达到1个单层（ML）。但是，沉积1毫升TTC时的能量转移大约与Ag膜厚度成反比，这表明量子尺寸效应。在推回模型和图像力模型的框架中，我们将Bohr-Sommerfeld量化规则与改进的库仑图像电势应用于TTC / Ag界面的相移，以提取1 ML TTC的介电常数。

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  • 来源
    《Physical review》 |2012年第15期|155453.1-155453.5|共5页
  • 作者

    Meng-Kai Lin; Yasuo Nakayama; Chin-Yung Wang; Jer-Chia Hsu; Chih-Hao Pan; Shin-ichi Machida; Tun-Wen Pi; Hisao Ishii; S.-J. Tang;

  • 作者单位

    Department of Physics and Astronomy, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China;

    Center for Frontier Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan;

    Department of Physics and Astronomy, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China;

    Department of Physics and Astronomy, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China;

    Department of Physics and Astronomy, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China;

    Center for Frontier Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan;

    National Synchrotron Radiation Research Center (NSRRC), Hsinchu, Taiwan 30076, Republic of China;

    Center for Frontier Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan,Graduate School of Advanced Integration Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan;

    Department of Physics and Astronomy, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China,National Synchrotron Radiation Research Center (NSRRC), Hsinchu, Taiwan 30076, Republic of China;

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  • 正文语种 eng
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  • 关键词

    polymers; organic compounds; adsorbed layers and thin films; quantum wells;

    机译：聚合物有机化合物;吸附层和薄膜;量子阱;

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