Transmission through a quantum dot in a four-terminal phase-coherent system
文献类型：期刊论文
| 作者 | Lin, TH; Sun, QF; Sun, QF , Peking Univ, Dept Phys, Beijing 100871, Peoples R China. |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 1998 |
| 卷号 | 10期号:16页码:3581-3593 |
| 关键词 | Conductance Oscillations Transport |
| ISSN号 | 0953-8984 |
| 英文摘要 | Motivated by the recent experiment by Schuster et al (Schuster R, Buks E, Heiblum M, Mahalu D, Umansky V and Shtrikman H 1997 Nature 385 417), we study a four-terminal phase-coherent system, each arm having a quantum dot embedded in it (dot 1 for studying and dot 0 for reference). Using the nonequilibrium-Green-function method, the open-circuit collector voltage v(4) is derived. We find the following features. (1) The phase behaviours are similar for all of the resonance peaks. (2) In a single resonance peak, the phase phi increases by pi on a scale of about the half-peak-width Gamma(omega). (3) An abrupt phase drop, by pi, occurs near the point half way between two consecutive peaks. These results agree well with experiment. We attribute the characteristic (3) to the off-diagonal linewidth of dot `, which is a single-electron effect. In addition, the crossover of the phase behaviour in going from the four-terminal system to a two-terminal system is studied. Finally, another manifestation of this off-diagonal linewidth is also discussed. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000073437200011 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/12319]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Sun, QF , Peking Univ, Dept Phys, Beijing 100871, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Lin, TH,Sun, QF,Sun, QF , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.. Transmission through a quantum dot in a four-terminal phase-coherent system[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,1998,10(16):3581-3593. |
| APA | Lin, TH,Sun, QF,&Sun, QF , Peking Univ, Dept Phys, Beijing 100871, Peoples R China..(1998).Transmission through a quantum dot in a four-terminal phase-coherent system.JOURNAL OF PHYSICS-CONDENSED MATTER,10(16),3581-3593. |
| MLA | Lin, TH,et al."Transmission through a quantum dot in a four-terminal phase-coherent system".JOURNAL OF PHYSICS-CONDENSED MATTER 10.16(1998):3581-3593. |
入库方式： OAI收割
来源：理论物理研究所
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