Full-counting statistics for molecular junctions: Fluctuation theorem and singularities
文献类型：期刊论文
| 作者 | Utsumi, Y ; Entin-Wohlman, O ; Ueda, A ; Aharony, A |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2013 |
| 卷号 | 87期号:11页码:115407 |
| 关键词 | SELF-CONSISTENT APPROXIMATIONS UNIVERSAL OSCILLATIONS MECHANICS SYSTEMS STATES MODEL |
| ISSN号 | 1098-0121 |
| 通讯作者 | Utsumi, Y (reprint author), Mie Univ, Fac Engn, Dept Engn Phys, Tsu, Mie 5148507, Japan. |
| 英文摘要 | We study the full-counting statistics of charges transmitted through a single-level quantum dot weakly coupled to a local Einstein phonon which causes fluctuations in the dot energy. An analytic expression for the cumulant generating function, accurate up to second order in the electron-phonon coupling and valid for finite voltages and temperatures, is obtained in the extended wide-band limit. The result accounts for nonequilibrium phonon distributions induced by the source-drain bias voltage, and concomitantly satisfies the fluctuation theorem. Extending the counting field to the complex plane, we investigate the locations of possible singularities of the cumulant generating function, and exploit them to identify regimes in which the electron transfer is affected differently by the coupling to the phonons. Within a large-deviation analysis, we find a kink in the probability distribution, analogous to a first-order phase transition in thermodynamics, which would be a unique hallmark of the electron-phonon correlations. This kink reflects the fact that although inelastic scattering by the phonons once the voltage exceeds their frequency can scatter electrons opposite to the bias, this will never generate current flowing against the bias at zero temperature, in accordance with the fluctuation theorem. DOI: 10.1103/PhysRevB.87.115407 |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | Bination Science Foundation (BSF) of the US and Israel; Israel Science Foundation (ISF); Okasan-Katoh Foundation; Young Researcher Overseas Visits Program for Vitalizing Brain Circulation from the JSPS [R2214]; MEXT kakenhi "Quantum Cybernetics"; [23740294]; [24710111] |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevB.87.115407 |
| 语种 | 英语 |
| WOS记录号 | WOS:000316101100005 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15401]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Utsumi, Y,Entin-Wohlman, O,Ueda, A,et al. Full-counting statistics for molecular junctions: Fluctuation theorem and singularities[J]. PHYSICAL REVIEW B,2013,87(11):115407. |
| APA | Utsumi, Y,Entin-Wohlman, O,Ueda, A,&Aharony, A.(2013).Full-counting statistics for molecular junctions: Fluctuation theorem and singularities.PHYSICAL REVIEW B,87(11),115407. |
| MLA | Utsumi, Y,et al."Full-counting statistics for molecular junctions: Fluctuation theorem and singularities".PHYSICAL REVIEW B 87.11(2013):115407. |
入库方式： OAI收割
来源：理论物理研究所
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