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相关论文: Effects of vibrational anharmonicity on molecular …

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We study charge and energy transfer in two-site molecular electronic junctions in which electron transport is assisted by a vibrational mode. To understand the role of mode harmonicity/anharmonicity on transport behavior, we consider two…

介观与纳米尺度物理 · 物理学 2015-09-01 Bijay Kumar Agarwalla , Jian-Hua Jiang , Dvira Segal

The thermoelectric properties of a molecular junction model, appropriate for large molecules such as fullerenes, are studied within a non-equilibrium adiabatic approach in the linear regime at room temperature. A self-consistent calculation…

介观与纳米尺度物理 · 物理学 2014-09-26 C. A. Perroni , D. Ninno , V. Cataudella

Here we present a theoretical analysis of inelastic effects on thermoelectric properties of molecular-scale junction in both linear and nonlinear response regimes. Considered device is composed of molecular quantum dot (with discrete energy…

介观与纳米尺度物理 · 物理学 2015-06-25 Kamil Walczak

We study the statistical properties of charge and energy transport in electron conducting junctions with electron-phonon interactions, specifically, the thermoelectric efficiency and its fluctuations. The system comprises donor and acceptor…

统计力学 · 物理学 2016-01-20 Bijay Kumar Agarwalla , Jian-Hua Jiang , Dvira Segal

We present a detailed study of the non-linear thermoelectric properties of a molecular junction, represented by a dissipative Anderson-Holstein model. A single orbital level with strong Coulomb interaction is coupled to a localized…

介观与纳米尺度物理 · 物理学 2013-01-10 M. Leijnse , M. R. Wegewijs , K. Flensberg

As a step towards a more realistic modeling of vibrations in single-molecule devices, we investigate the effects of charge-dependent vibrational frequencies and anharmonic potentials on electronic transport. For weak phonon relaxation, we…

介观与纳米尺度物理 · 物理学 2007-05-23 Jens Koch , Felix von Oppen

We study current-induced vibrational cooling, heating, and instability in a donor-acceptor rectifying molecular junction using a full counting statistics approach. In our model, electron-hole pair excitations are coupled to a given…

介观与纳米尺度物理 · 物理学 2017-08-23 L. Simine , D. Segal

We expand iterative numerically-exact influence functional path-integral tools and present a method capable of following the nonequilibrium time evolution of subsystems coupled to multiple bosonic and fermionic reservoirs simultaneously.…

介观与纳米尺度物理 · 物理学 2015-06-15 Lena Simine , Dvira Segal

We investigate the interplay of quantum interference effects and electronic-vibrational coupling in electron transport through single-molecule junctions, employing a nonequilibrium Green's function approach. Our findings show that inelastic…

介观与纳米尺度物理 · 物理学 2013-02-18 R. Härtle , M. Butzin , M. Thoss

We review studies of vibrational energy transfer in a molecular junction geometry, consisting of a molecule bridging two heat reservoirs, solids or large chemical compounds. This setup is of interest for applications in molecular…

介观与纳米尺度物理 · 物理学 2016-06-22 Dvira Segal , Bijay Kumar Agarwalla

The current-induced vibrational dynamics is a key factor determining the stability of molecular nanojunctions. Beyond conventional Joule heating, a different mechanism caused by nonconservative current-induced forces has been predicted for…

介观与纳米尺度物理 · 物理学 2026-02-20 Martin Mäck , Michael Thoss , Samuel L. Rudge

We theoretically analyzed inelastic effects in the electron transport through molecular junctions originating from electron-vibron interactions. The molecular bridge was simulated by a periodic chain of identical interacting hydrogen-like…

材料科学 · 物理学 2010-01-03 Natalya A. Zimbovskaya , Maija M. Kuklja

We develop a general theory for thermal transport in anharmonic systems under the weak system-bath coupling approximation similar to the quantum master equation formalism. A current operator is derived, which is valid not only in the steady…

介观与纳米尺度物理 · 物理学 2012-05-28 Juzar Thingna , J. L. García-Palacios , Jian-Sheng Wang

The linear thermoelectric properties of molecular junctions are theoretically studied close to room temperature within a model including electron-electron and electron-vibration interactions on the molecule. A nonequilibrium adiabatic…

介观与纳米尺度物理 · 物理学 2015-11-26 C. A. Perroni , D. Ninno , V. Cataudella

The interaction between electronic and vibrational degrees of freedom is an important mechanism in nonequilibrium charge transport through molecular nanojunctions. While adiabatic polaron-type coupling has been studied in great detail, new…

介观与纳米尺度物理 · 物理学 2022-06-10 Christoph Kaspar , André Erpenbeck , Jakob Bätge , Christian Schinabeck , Michael Thoss

Vibrationally inelastic electron transport through a flexible molecular junction is investigated. The study is based on a mechanistic model for a biphenyl molecule between two metal electrodes. Employing methods from electron-molecule…

介观与纳米尺度物理 · 物理学 2023-07-26 Martin Cizek , Michael Thoss , Wolfgang Domcke

We propose a model for a molecular junction with internal anharmonic torsional vibrations interacting with an electric current. The Wangsness-Bloch-Redfield master equation approach is used to determine the stationary reduced density matrix…

介观与纳米尺度物理 · 物理学 2015-05-19 Ivan A. Pshenichnyuk , Martin Čížek

Problems of heat transport are ubiquitous to various technologies such as power generation, cooling, electronics, and thermoelectrics. In this paper we advocate for the application of the quantum self-consistent reservoir method, which is…

介观与纳米尺度物理 · 物理学 2019-01-30 Roya Moghaddasi Fereidani , Dvira Segal

Currently, molecular tunnel junctions are recognized as important active elements of various nanodevices. This gives a strong motivation to study physical mechanisms controlling electron transport through molecules. Electron motion through…

介观与纳米尺度物理 · 物理学 2013-01-24 Natalya A. Zimbovskaya

Vibrational nonequilibrium effects in charge transport through single-molecule junctions are investigated. Focusing on molecular bridges with multiple electronic states, it is shown that electronic-vibrational coupling triggers a variety of…

介观与纳米尺度物理 · 物理学 2011-03-15 R. Härtle , C. Benesch , M. Thoss
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