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Du, L; Wang, YL; Liang, GH; Kang, GZ; Liu, XJ; Zong, HS; Zong, HS (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
Curvature-induced bound states and coherent electron transport on the surface of a truncated cone
Source PublicationPHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Language英语
KeywordBound State Coherent Transport Curvature-induced Geometric Potential Truncated Cone
AbstractWe study the curvature-induced bound states and the coherent transport properties for a particle constrained to move on a truncated cone-like surface. With longitudinal hard wall boundary condition, the probability densities and spectra energy shifts are calculated, and are found to be obviously affected by the surface curvature. The bound-state energy levels and energy differences decrease as increasing the vertex angle or the ratio of axial length to bottom radius of the truncated cone. In a two-dimensional (2D) GaAs substrate with this geometric structure, an estimation of the ground-state energy shift of ballistic transport electrons induced by the geometric potential (GP) is addressed, which shows that the fraction of the ground-state energy shift resulting from the surface curvature is unnegligible under some region of geometric parameters. Furthermore, we model a truncated cone-like junction joining two cylinders with different radii, and investigate the effect of the GP on the transmission properties by numerically solving the open-boundary 2D Schrodinger equation with GP on the junction surface. It is shown that the oscillatory behavior of the transmission coefficient as a function of the injection energy is more pronounced when steeper GP wells appear at the two ends of the junction. Moreover, at specific injection energy, the transmission coefficient is oscillating with the ratio of the cylinder radii at incoming and outgoing sides. (C) 2015 Elsevier B.V. All rights reserved.
2016
Volume76Pages:28-34
Subject AreaScience & Technology - Other Topics ; Physics
DOIhttp://dx.doi.org/10.1016/j.physe.2015.10.011
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [11047020, 11404157, 11274166, 11275097, 11475085, 11535005] ; National Natural Science Foundation of China [11047020, 11404157, 11274166, 11275097, 11475085, 11535005] ; National Natural Science Foundation of China [11047020, 11404157, 11274166, 11275097, 11475085, 11535005] ; National Natural Science Foundation of China [11047020, 11404157, 11274166, 11275097, 11475085, 11535005] ; National Basic Research Program of China [2012CB921504] ; National Basic Research Program of China [2012CB921504] ; National Basic Research Program of China [2012CB921504] ; National Basic Research Program of China [2012CB921504] ; Natural Science Foundation of Shandong Province of China [ZR2012AM022, ZR2011AM019] ; Natural Science Foundation of Shandong Province of China [ZR2012AM022, ZR2011AM019] ; Natural Science Foundation of Shandong Province of China [ZR2012AM022, ZR2011AM019] ; Natural Science Foundation of Shandong Province of China [ZR2012AM022, ZR2011AM019] ; Jiangsu Planned Projects for Postdoctoral Research Funds [1401113C] ; Jiangsu Planned Projects for Postdoctoral Research Funds [1401113C] ; Jiangsu Planned Projects for Postdoctoral Research Funds [1401113C] ; Jiangsu Planned Projects for Postdoctoral Research Funds [1401113C]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21790
Collection理论物理所科研产出_SCI论文
Corresponding AuthorZong, HS (reprint author), Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China.
Recommended Citation
GB/T 7714
Du, L,Wang, YL,Liang, GH,et al. Curvature-induced bound states and coherent electron transport on the surface of a truncated cone[J]. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,2016,76:28-34.
APA Du, L.,Wang, YL.,Liang, GH.,Kang, GZ.,Liu, XJ.,...&Zong, HS .(2016).Curvature-induced bound states and coherent electron transport on the surface of a truncated cone.PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,76,28-34.
MLA Du, L,et al."Curvature-induced bound states and coherent electron transport on the surface of a truncated cone".PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 76(2016):28-34.
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