Tuning of the periodicity of stable self-organized metallic templates

doi:10.1088/1674-1056/20/2/020513

中国物理B ›› 2011, Vol. 20 ›› Issue (2): 20513-020513.doi: 10.1088/1674-1056/20/2/020513

Tuning of the periodicity of stable self-organized metallic templates

张勇¹, 王晓春², 赵寒月², 陈难先²

(1)Department of Electrical and Computer Engineering, The University of North Carolina at Charlotte, Charlotte, NC 28223-0001, USA; (2)Department of Physics, Tsinghua University, Beijing 100084, China

收稿日期:2010-07-27 修回日期:2010-09-08 出版日期:2011-02-15 发布日期:2011-02-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 50531050), the National Basic Research Program of China (Grant No. 2006CB605100), the Natural Science Foundation for Postdoctoral Scientists of China (Grant No. 20090450426), and the CRI of UNC-Charlotte.

Tuning of the periodicity of stable self-organized metallic templates

Wang Xiao-Chun(王晓春)^a)^†, Zhao Han-Yue(赵寒月)^a), Chen Nan-Xian(陈难先)^a),and Zhang Yong(张勇)^b)

^a Department of Physics, Tsinghua University, Beijing 100084, China; ^b Department of Electrical and Computer Engineering, The University of North Carolina at Charlotte, Charlotte, NC 28223-0001, USA

Received:2010-07-27 Revised:2010-09-08 Online:2011-02-15 Published:2011-02-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 50531050), the National Basic Research Program of China (Grant No. 2006CB605100), the Natural Science Foundation for Postdoctoral Scientists of China (Grant No. 20090450426), and the CRI of UNC-Charlotte.

摘要/Abstract

摘要： The atomic and electronic structures of Pb bilayer/Pt(111) are investigated with two theoretical calculations. We find that the stable (2×2)/(3×3) Pb/Pt(111) structure is a promising candidate for being used as a template with self-organized ordered Pb semi-cluster array on the first Pb monolayer. This stable structure can realize the ordered Au single-atom array around the Pb semi-clusters that can cause selective adsorption of noble atoms. The size of Pb magic number semi-cluster plays a more important role in determining the periodicity of the template than the lattice constant misfit between the substrate and the overlayer. This leads to quite a different periodicity between the two stable templates, which are (2×2)/(3×3) Pb/Pt(111) and Pb/Cu(111). Therefore, by considering the size of the stable semi-clusters and carefully selecting different substrate materials, we can tune the density of Pb semi-clusters as the nucleation points and then tune the periodicity of the stable template.

关键词: self-organizing, template, Chen--Mö, bius inversion method, first-principles calculation

Abstract: The atomic and electronic structures of Pb bilayer/Pt(111) are investigated with two theoretical calculations. We find that the stable (2×2)/(3×3) Pb/Pt(111) structure is a promising candidate for being used as a template with self-organized ordered Pb semi-cluster array on the first Pb monolayer. This stable structure can realize the ordered Au single-atom array around the Pb semi-clusters that can cause selective adsorption of noble atoms. The size of Pb magic number semi-cluster plays a more important role in determining the periodicity of the template than the lattice constant misfit between the substrate and the overlayer. This leads to quite a different periodicity between the two stable templates, which are (2×2)/(3×3) Pb/Pt(111) and Pb/Cu(111). Therefore, by considering the size of the stable semi-clusters and carefully selecting different substrate materials, we can tune the density of Pb semi-clusters as the nucleation points and then tune the periodicity of the stable template.

Key words: self-organizing, template, Chen–Möbius inversion method, first-principles calculation

中图分类号: (Self-organized systems)

05.65.+b

68.35.Ja (Surface and interface dynamics and vibrations) 68.43.Bc (Ab initio calculations of adsorbate structure and reactions)

王晓春, 赵寒月, 陈难先, 张勇. Tuning of the periodicity of stable self-organized metallic templates[J]. 中国物理B, 2011, 20(2): 20513-020513.

Wang Xiao-Chun(王晓春), Zhao Han-Yue(赵寒月), Chen Nan-Xian(陈难先), and Zhang Yong(张勇) . Tuning of the periodicity of stable self-organized metallic templates[J]. Chin. Phys. B, 2011, 20(2): 20513-020513.

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Tuning of the periodicity of stable self-organized metallic templates

Tuning of the periodicity of stable self-organized metallic templates

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