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首页> 外文期刊>Physical review >Structure of the (010) surface of the orthorhombic complex metallic alloy T-Al_3(Mn,Pd)
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Structure of the (010) surface of the orthorhombic complex metallic alloy T-Al_3(Mn,Pd)

机译：正交晶复合金属合金T-Al_3（Mn，Pd）的（010）表面结构

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摘要

The atomic and electronic structures of the (010) surface of the T-Al_3(Mn,Pd) complex metallic alloy is investigated by means of low-energy electron diffraction (LEED), scanning tunneling microscopy (STM), x-ray and ultraviolet photoelectron spectroscopy (XPS and UPS), x-ray photoelectron diffraction (XPD), and ab initio calculations. While structural imperfections are observed at the surface and out of the various possible terminations, the puckered P2 layer is identified as the only surface termination, thus pointing out the existence of a well-defined minimum in the surface energy landscape. The measured step heights correspond to distances between identical planes along the [010] direction in the bulk model, I.e., b/2. A bias dependency of the STM topography is found. The XPD and LEED patterns confirm the pseudotenfold symmetry of the sample. XPS and UPS show a more metallic signature of the T phase compared to Al-based quasicrystalline phases.
机译：通过低能电子衍射（LEED），扫描隧道显微镜（STM），X射线和紫外光研究了T-Al_3（Mn，Pd）复合金属合金（010）表面的原子和电子结构。光电子能谱（XPS和UPS），X射线光电子衍射（XPD）和从头算。尽管在表面以及各种可能的终端中都观察到结构缺陷，但褶皱的P2层被认为是唯一的表面终端，因此指出了在表面能图中存在明确定义的最小值。测得的台阶高度对应于整体模型中沿[010]方向的相同平面之间的距离，即b / 2。发现了STM形貌的偏差依赖性。 XPD和LEED模式确认了样品的伪十倍对称性。与基于Al的准晶相相比，XPS和UPS具有更金属的T相特征。

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  • 来源
    《Physical review》 |2010年第12期|p.125418.1-125418.12|共12页
  • 作者

    Th. Deniozou; R. Addou; A. K. Shukla; M. Heggen; M. Feuerbacher; M. Krajci; J. Hafner; R. Widmer; O. Groening; V. Fournee; J.-M. Dubois; J. Ledieu;

  • 作者单位

    Institut Jean Lamour, UMR 7198, CNRS-Nancy-Universite-UPV-Metz, Ecole des Mines, Pare de Saurupt, 54042 Nancy Cedex, France Fritz-Haber-Institut der Max-Planck-Gesellschaft Abteilung Molekulphysik, Faradayweg 4-6, 14195 Berlin, Germany;

    rnInstitut Jean Lamour, UMR 7198, CNRS-Nancy-Universite-UPV-Metz, Ecole des Mines, Pare de Saurupt, 54042 Nancy Cedex, France;

    rnInstitut Jean Lamour, UMR 7198, CNRS-Nancy-Universite-UPV-Metz, Ecole des Mines, Pare de Saurupt, 54042 Nancy Cedex, France;

    rnInstitut fuer Festkoerperforschung, Forschungszentrum Juelich, 52425 Juelich, Germany;

    rnInstitut fuer Festkoerperforschung, Forschungszentrum Juelich, 52425 Juelich, Germany;

    rnInstitute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, SK-84511 Bratislava, Slovak Republic Fakultaet fuer Physik and Center for Computational Materials Science, Universitaet Wien, Sensengasse 8/12, A-1090 Wien, Austria;

    rnInstitute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, SK-84511 Bratislava, Slovak Republic and Fakultaet fuer Physik and Center for Computational Materials Science, Universitaet Wien, Sensengasse 8/12, A-1090 Wien, Austria;

    rnEMPA, Swiss Federal Laboratories for Materials Testing and Research, nanotech@surfaces Laboratory, Feuerwerkerstrasse 39, CH-3602 Thun, Switzerland;

    rnMPA, Swiss Federal Laboratories for Materials Testing and Research, nanotech@surfaces Laboratory, Feuerwerkerstrasse 39, CH-3602 Thun, Switzerland;

    rnInstitut Jean Lamour, UMR 7198, CNRS-Nancy-Universite-UPV-Metz, Ecole des Mines, Pare de Saurupt, 54042 Nancy Cedex, France;

    rnInstitut Jean Lamour, UMR 7198, CNRS-Nancy-Universite-UPV-Metz, Ecole des Mines, Pare de Saurupt, 54042 Nancy Cedex, France;

    rnInstitut Jean Lamour, UMR 7198, CNRS-Nancy-Universite-UPV-Metz, Ecole des Mines, Pare de Saurupt, 54042 Nancy Cedex, France;

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  • 关键词

    quasicrystals; scanning tunneling microscopy (including chemistry induced with STM);

    机译：准晶体扫描隧道显微镜（包括用STM诱导的化学反应）;

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