The transient transmission through a quantum dot under the influence of oscillating external fields
文献类型：期刊论文
| 作者 | Lin, TH; Sun, QF; Sun, QF , Peking Univ, Dept Phys, Mesoscop Phys Lab, 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:3569-3579 |
| 关键词 | Double-barrier Structure Time-dependent Transport Frequencies Wells Thz |
| ISSN号 | 0953-8984 |
| 英文摘要 | We consider a quantum dot coupled to two leads in the presence of oscillating external fields applied to the dot and the two leads. Using the nonequilibrium-Green-function method, the formula for the transient transmission probability (TTP) T-epsilon f,T-epsilon i (t', t) is derived. The numerical studies reveal the following facts. When t' - t similar to 1/Gamma (Gamma is the full width of the resonant state), no visible resonant tunnelling behaviour occurs, and T-epsilon f,T-epsilon i(t', t) strongly depends on the time at which the electron enters the dot, t, and that at which it exits from it, t'; when t'-t much greater than 1/Gamma, the resonant tunnelling becomes striking, and T-epsilon f,T-epsilon i (t', t) depends only weakly on t and t'. The conventional transmission probability T-epsilon f,T-epsilon i, defined as the limit as t --> -infinity and t' -->+infinity, has a very rich spectrum and exhibits a simultaneous quenching of some channels. On the basis of the properties of T-epsilon f,T-epsilon i, the condition for the occurrence of an electron-photon pump has also been discussed. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000073437200010 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/12318]  |
| 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, Mesoscop Phys Lab, Beijing 100871, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Lin, TH,Sun, QF,Sun, QF , Peking Univ, Dept Phys, Mesoscop Phys Lab, Beijing 100871, Peoples R China.. The transient transmission through a quantum dot under the influence of oscillating external fields[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,1998,10(16):3569-3579. |
| APA | Lin, TH,Sun, QF,&Sun, QF , Peking Univ, Dept Phys, Mesoscop Phys Lab, Beijing 100871, Peoples R China..(1998).The transient transmission through a quantum dot under the influence of oscillating external fields.JOURNAL OF PHYSICS-CONDENSED MATTER,10(16),3569-3579. |
| MLA | Lin, TH,et al."The transient transmission through a quantum dot under the influence of oscillating external fields".JOURNAL OF PHYSICS-CONDENSED MATTER 10.16(1998):3569-3579. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。