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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/52936


    Title: Nonalloying surface reconstructions of ultrathin Sn films on Cu(111) investigated with LEED, XPS, and photoelectron extended fine structure analysis
    Authors: Liang,XH;Deng,JH;Fan,LJ;Yang,YW;Luh,DA
    Contributors: 物理學系
    Keywords: PHASE-DIAGRAM;PRINCIPLES;SN/GE(111);INTERFACE
    Date: 2011
    Issue Date: 2012-06-11 10:50:47 (UTC+8)
    Publisher: 國立中央大學
    Abstract: By preventing surface alloying during growth of Sn on Cu(111) at 100 K, we discovered two novel nonalloying surface reconstructions, denoted as lower-coverage (LC) and higher-coverage (HC) phases. They were investigated with low energy electron diffraction (LEED), x-ray photoemission spectroscopy (XPS), and analysis of photoelectron extended fine structure (PEFS). The LC phase has a p(2 x 2) structure with one Sn atom per unit cell, corresponding to a Sn coverage 0.25 ML; the HC phase has a structure of M = ((2)(1) (1)(3)) (matrix notation) with two Sn atoms per unit cell, corresponding to a Sn coverage 0.40 ML. Structural models for the two phases are proposed.
    Relation: PHYSICAL REVIEW B
    Appears in Collections:[Department of Physics] journal & Dissertation

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