Bipolaronic blockade effect in quantum dots with negative charging energy
文献类型：期刊论文
| 作者 | Fang, TF ; Zhang, SF ; Niu, CJ ; Sun, QF |
| 刊名 | EPL
 |
| 出版日期 | 2014 |
| 卷号 | 105期号:4 |
| ISSN号 | 0295-5075 |
| 通讯作者 | Fang, TF (reprint author), Lanzhou Univ, Sch Phys, Ctr Interdisciplinary Studies, Lanzhou 730000, Peoples R China. |
| 中文摘要 | We investigate single-electron transport through quantum dots with negative charging energy induced by a polaronic energy shift. For weak dot-lead tunnel couplings, we demonstrate a bipolaronic blockade effect at low biases which suppresses the oscillating linear conductance, while the conductance resonances under large biases are enhanced. A novel conductance plateau develops when the coupling asymmetry is introduced, with its height and width tuned by the coupling strength and external magnetic field. It is further shown that the amplitude ratio of the magnetic-split conductance peaks changes from 3 to 1 for increasing coupling asymmetry. Though we demonstrate all these transport phenomena in the low-order single-electron tunneling regime, they are already strikingly different from the usual Coulomb blockade physics and are easy to observe experimentally. Copyright (C) EPLA, 2014 |
| 资助信息 | NBRP of China [2012CB921303]; NSF-China [11004090, 11274364] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59071]  |
| 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 | Fang, TF,Zhang, SF,Niu, CJ,et al. Bipolaronic blockade effect in quantum dots with negative charging energy[J]. EPL,2014,105(4). |
| APA | Fang, TF,Zhang, SF,Niu, CJ,&Sun, QF.(2014).Bipolaronic blockade effect in quantum dots with negative charging energy.EPL,105(4). |
| MLA | Fang, TF,et al."Bipolaronic blockade effect in quantum dots with negative charging energy".EPL 105.4(2014). |
入库方式： OAI收割
来源：物理研究所
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