Curvature-induced bound states and coherent electron transport on the surface of a truncated cone
文献类型：期刊论文
| 作者 | Du, Long1; Wang, Yong-Long2,3; Liang, Guo-Hua1; Kang, Guang-Zhen2; Liu, Xiao-Jun1; Zong, Hong-Shi2,4,5 |
| 刊名 | PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 76页码:28-34 |
| 关键词 | Bound state Coherent transport Curvature-induced Geometric potential Truncated cone |
| 英文摘要 | We 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Nanoscience & Nanotechnology ; Physics, Condensed Matter |
| 研究领域[WOS] | Science & Technology - Other Topics ; Physics |
| 关键词[WOS] | QUANTUM-MECHANICS ; CONSTRAINTS ; PARTICLE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000366084100004 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/16078]  |
| 专题 | 紫金山天文台_盱眙天文观测站 |
| 作者单位 | 1.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Dept Phys, Key Lab Modern Acoust, Nanjing 210093, Jiangsu, Peoples R China 2.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 3.Linyi Univ, Sch Sci, Dept Phys, Linyi 276005, Peoples R China 4.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Long,Wang, Yong-Long,Liang, Guo-Hua,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, Long,Wang, Yong-Long,Liang, Guo-Hua,Kang, Guang-Zhen,Liu, Xiao-Jun,&Zong, Hong-Shi.(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, Long,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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