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Electronic structure of non-centrosymmetric Ag_2HgSnS_4 single crystal

机译：非中心对称Ag_2HgSnS_4单晶的电子结构

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摘要

X-ray photoelectron core-level and valence-band spectra for pristine and Ar~+-ion irradiated surfaces of Ag_2HgSnS_4 single crystal grown by the Bridgman-Stockbarger technique have been measured in the pres ent work. Ag_2HgSnS_4 single-crystalline surface was found to be sensitive to Ar~+ ion-bombardment: signif icant modification in top surface layers was induced leading to abrupt decreasing the content of mercury atoms in the layers. X-ray emission bands representing the energy distribution of the valence Ag d and S p states were recorded. S 3p states contribute predominantly in the central and upper portions of the valence band, with significant contributions in the lower portion of the valence band of the Ag_2HgSnS_4 single crystal. Ag 4d states contribute mainly in the central portion of the valence band of the compound under consideration.
机译：在本工作中，已经测量了通过Bridgman-Stockbarger技术生长的Ag_2HgSnS_4单晶的原始和Ar〜+离子辐照表面的X射线光电子核能级和价带谱。发现Ag_2HgSnS_4单晶表面对Ar〜+离子轰击敏感：在上表面层中引起显着的改性，导致层中汞原子含量急剧下降。记录了代表价态Ag d和S p态能量分布的X射线发射带。 S 3p态主要在价带的中心和上部起作用，而在Ag_2HgSnS_4单晶的价带的下部起作用很大。 Ag 4d态主要在所考虑化合物的价带的中心部分起作用。

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  • 来源
    《Optical Materials》 |2014年第5期|977-981|共5页
  • 作者

    V.V. Bozhko; A.P. Tretyak; O.V. Parasyuk; V.A. Ocheretova; O.Y. Khyzhun;

  • 作者单位

    Department of Physics Eastern European National University 13 Voli Ave. Lutsk 43025 Ukraine;

    Department of Inorganic and Physical Chemistry Eastern European National University 13 Voli Ave. Lutsk 43025 Ukraine;

    National Technical University 'Kyiv Polytechnic Institute' 37 Peremogy Avenue Kyiv 03036 Ukraine;

    Department of Physics Eastern European National University 13 Voli Ave. Lutsk 43025 Ukraine Institute for Problems of Materials Science National Academy of Sciences of Ukraine 3 Krzhyzhanivsky Street Kyiv 03142 Ukraine;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Chalcogenide crystals; Crystal growth; X-ray photoelectron spectroscopy; X-ray emission spectroscopy; Electronic structure;

    机译：硫属化物晶体;晶体生长;X射线光电子能谱;X射线发射光谱;电子结构;

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