NUMERICAL STUDY OF TRANSPORT PROPERTIES IN TOPOLOGICAL INSULATOR QUANTUM DOTS UNDER MAGNETIC FIELD
文献类型：期刊论文
| 作者 | Zhang, SN ; Jiang, H ; Liu, HW |
| 刊名 | MODERN PHYSICS LETTERS B
 |
| 出版日期 | 2013 |
| 卷号 | 27期号:14 |
| 关键词 | Topological insulator quantum dot magnetic field Aharonov-Bohm oscillation spin polarized |
| ISSN号 | 0217-9849 |
| 通讯作者 | Zhang, SN (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | In this paper, we investigate the transport properties of HgTe/CdTe-based topological insulator quantum dots (TIQDs) under magnetic field. Both disk and square shaped TIQDs are considered and the magneto-conductance are calculated numerically for various magnetic field strength. The magnetic field lifts the spin degeneracy, leading to spin polarized current at given Fermi energy. Meanwhile, the magneto-conductance demonstrates the Aharonov-Bohm (AB) oscillation with a period of one flux quantum phi(0) = h/e. Numerical results for AB oscillation features indicate the mismatch between electron (e) and hole (h) doping conditions, which can be attributed to the e-h asymmetry in the full band Hamiltonian. Further, interference effect emerges around bulk and edge energy degenerate points, subsequently suppressing the magneto-conductance in both shaped systems. All these physical characteristics are qualitatively consistent for disk and square shaped TIQDs due to the topological nature of edge modes. |
| 资助信息 | NSFC [10821403, 10974236, 11074174, 11274032]; China Post-Doctoral Science Foundation [2012M520099]; Soochow University |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57271]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, SN,Jiang, H,Liu, HW. NUMERICAL STUDY OF TRANSPORT PROPERTIES IN TOPOLOGICAL INSULATOR QUANTUM DOTS UNDER MAGNETIC FIELD[J]. MODERN PHYSICS LETTERS B,2013,27(14). |
| APA | Zhang, SN,Jiang, H,&Liu, HW.(2013).NUMERICAL STUDY OF TRANSPORT PROPERTIES IN TOPOLOGICAL INSULATOR QUANTUM DOTS UNDER MAGNETIC FIELD.MODERN PHYSICS LETTERS B,27(14). |
| MLA | Zhang, SN,et al."NUMERICAL STUDY OF TRANSPORT PROPERTIES IN TOPOLOGICAL INSULATOR QUANTUM DOTS UNDER MAGNETIC FIELD".MODERN PHYSICS LETTERS B 27.14(2013). |
入库方式： OAI收割
来源：物理研究所
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