Estimating the range of influence of point defects on Cu (110) surface states

G. E. Isted; P. D. Lane; R. J. Cole; M. Caffio; R. Schaub

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Estimating the range of influence of point defects on Cu (110) surface states

机译：估计点缺陷对Cu（110）表面状态的影响范围

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By utilizing reflection anisotropy spectroscopy (RAS) and scanning tunneling microscopy (STM) measurements of the ion-bombarded Cu (110) surface at low temperatures, we have developed a simple methodology for estimating the effective surface area over which irradiation-induced defects perturb surface states, leading to a reduction in the intensity of the 2.1 eV RAS peak of this surface. Each composite defect decorating an ion-impact site quenches the RAS signal in proportion to an area equivalent to approximately 170 unit cells. We estimate that an atomic defect has an effective RAS cross section with area approximately equal to that of a circle with a radius of 0.75 nm, an area equivalent to that of around 19 unit cells. Accurate determination of the coverage and spatial distribution of surface defects is a prerequisite for a coherent analytical approach to modeling the RAS data of this system.

机译：通过利用离子各向异性轰击的Cu（110）表面在低温下的反射各向异性光谱（RAS）和扫描隧道显微镜（STM）测量，我们开发了一种简单的方法来估算有效表面面积，在该有效表面积上辐射诱发的缺陷会扰动表面状态，导致该表面的2.1 eV RAS峰强度降低。每个装饰离子撞击位点的复合缺陷均按相当于约170个单位晶胞的面积的比例淬灭RAS信号。我们估计原子缺陷具有有效的RAS横截面，其面积大约等于半径为0.75 nm的圆的面积，该面积等于大约19个单位晶胞的面积。准确确定表面缺陷的覆盖范围和空间分布是采用连贯分析方法对系统RAS数据建模的前提。

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《Physical review》 |2011年第15期|p.155403.1-155403.7|共7页
作者
G. E. Isted; P. D. Lane; R. J. Cole; M. Caffio; R. Schaub;
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SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom;

SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom;

SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom;

School of Chemistry, The University of St. Andrews, St. Andrews KYI 6 9ST, United Kingdom;

School of Chemistry, The University of St. Andrews, St. Andrews KYI 6 9ST, United Kingdom;

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optical properties of surfaces; absorption and reflection spectra: visible and ultraviolet; surface states; band structure; electron density of states;

机译：表面的光学性质;吸收和反射光谱：可见和紫外;表面状态;带结构;状态电子密度;

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2. Growth Of Sexithiophene Crystals On Cu(110) And Cu(110)-(2 × 1)o Stripe Phase-the Influence Of Surface Corrugation [J] . M. Koini, T. Haber, S. Berkebile, Journal of Crystal Growth . 2009,第5期

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3. The Adsorption of O Atom on Cu(100), (110), and (111) Low-Index and Step Defect Surfaces [J] . Ze Xin Wang, Feng Hui Tian The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2003,第25期

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4. Influence of point defects on Cu(100) surface on thermal stability of Fe-terephtalate metal-organic networks [C] . A. I. Fadeeva, V. A. Gorbunov, P. V. Stishenko Oil and Gas Engineering (conference) . 2020

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5. Creation of defects and interactions between defects and small molecules on titanium dioxide(110) surfaces: Comparative SHG and XPS studies. [D] . Shultz, Ashley Nicholle. 1996

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6. Selective Oxidation of Propylene on Cu2O(111) and Cu2O(110) Surfaces: A Systematically DFT Study [O] . Yang-Yang Song, Bo Dong, Shi-Wei Wang, 2020

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7. HRLEED study of the roughening transitions in Cu(110), Ni(110) and Ag(110) surfaces [O] . Wang, K., Montano, P.A. 1996

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8. Comment on Long-Range Spatial Self-Organization in the Adsorbate InducedRestructuring of Surfaces Cu(110)-(2x1)O [R] . Meyer, J. A., Stranick, S. J., Weiss, P. S. 1992

机译：评论Cu（110） - （2x1）O表面吸附诱导重构中的远程空间自组织

Estimating the range of influence of point defects on Cu (110) surface states

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