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相关论文: Coupled electron and phonon transport in one-dimen…

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Electronic transport in a model molecular device coupled to local phonon modes is theoretically analyzed. The method allows for obtaining an accurate approximation of the system's quantum state irrespective of the electron and phonon energy…

介观与纳米尺度物理 · 物理学 2007-10-10 Antonino La Magna , Ioannis Deretzis

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

We have studied theoretically the Kondo effect in the quantum dot(QD) within the whole range of temperature by using the equation-of-motion(EOM) technique based on the non-equilibrium Green function formalism. We have taken the finiteness…

强关联电子 · 物理学 2012-09-12 Kuk-Chol Ri , Chol-Won Ri , Gum-Hyok Jong

We present a general coupled electron-phonon Boltzmann transport equations (BTEs) scheme designed to capture the mutual drag of the two interacting systems. By combining density functional theory based first principles calculations of…

材料科学 · 物理学 2020-02-19 Nakib H. Protik , David A. Broido

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

Thermal engineering of quantum devices has attracted much attention since the discovery of quantized thermal conductance of phonons. Although easily submerged in numerous excitations in macro-systems, quantum behaviors of phonons manifest…

材料科学 · 物理学 2020-10-02 Xiaobin Chen , Yizhou Liu , Wenhui Duan

Motivated by recent experiments, we present here an ab initio study of the impact of the phonon transport on the thermal conductance and thermoelectric figure of merit of C$_{60}$-based single-molecule junctions. To be precise, we combine…

介观与纳米尺度物理 · 物理学 2017-08-22 Jan Christopher Klöckner , Robert Siebler , Juan Carlos Cuevas , Fabian Pauly

We present an analysis of the transient electronic and transport properties of a nanojunction in the presence of electron-electron and electron-phonon interactions. We introduce a novel numerical approach which allows for an efficient…

介观与纳米尺度物理 · 物理学 2018-09-13 R. Seoane Souto , R. Avriller , A. Levy Yeyati , A. Martín-Rodero

We study the spectral and transport properties of a Mott insulator driven by a static electric field into a non-equilibrium steady state. For the dissipation, we consider two mechanisms: Wide-band fermion reservoirs and phonons included…

强关联电子 · 物理学 2022-09-19 T. M. Mazzocchi , P. Gazzaneo , J. Lotze , E. Arrigoni

We propose a system where coherent thermal transport between two reservoirs in non-galvanic contact is modulated by independently tuning the electron-photon and the electron-phonon coupling. The scheme is based on two gate-controlled…

介观与纳米尺度物理 · 物理学 2017-08-18 Federico Paolucci , Giuliano Timossi , Paolo Solinas , Francesco Giazotto

We study inelastic electron tunneling through a molecular junction using the non-equilibrium Green function (NEGF) formalism. The effect of the mutual influence between the phonon and the electron subsystems on the electron tunneling…

介观与纳米尺度物理 · 物理学 2009-11-10 Michael Galperin , Mark A. Ratner , Abraham Nitzan

Phonon transport across a vacuum gap separating intrinsic silicon crystals is predicted via the atomistic Green's function method combined with first-principles calculations of all interatomic force constants. The overlap of electron wave…

介观与纳米尺度物理 · 物理学 2022-01-14 Takuro Tokunaga , Masao Arai , Kazuaki Kobayashi , Wataru Hayami , Shigeru Suehara , Takuma Shiga , Keunhan Park , Mathieu Francoeur

The linear transport properties of a model molecular transistor with electron-electron and electron-phonon interactions were investigated analytically and numerically. The model takes into account phonon modulation of the electronic energy…

介观与纳米尺度物理 · 物理学 2007-05-23 P. S. Cornaglia , D. R. Grempel , H. Ness

Using Green's function equation of motion within Lacroix decoupling scheme, we examine the thermoelectric transport features of a strongly interacting quantum dot coupled between metallic leads. We demonstrate that a qualitative description…

介观与纳米尺度物理 · 物理学 2023-08-22 Sachin Verma , B. S. Tewari , A. Dhyani , Ajay

We present a theory that efficiently describes the quantum dynamics of an electronic excitation that is coupled to a continuous, highly structured phonon environment. Based on a stochastic approach to non-Markovian open quantum systems, we…

量子物理 · 物理学 2009-11-05 Jan Roden , Alexander Eisfeld , Wolfgang Wolff , Walter T. Strunz

This review deals with the nonequilibrium Green's function (NEGF) method applied to the problems of energy transport due to atomic vibrations (phonons), primarily for small junction systems. We present a pedagogical introduction to the…

介观与纳米尺度物理 · 物理学 2013-05-28 Jian-Sheng Wang , Bijay Kumar Agarwalla , Huanan Li , Juzar Thingna

We study transport equations for quantum many-particle systems in terms of correlations by applying the general formalism developed in an earlier paper to exactly soluble electron-phonon models. The one-dimensional models considered are the…

统计力学 · 物理学 2009-10-28 J. Fricke , V. Meden , C. Wohler , K. Schonhammer

We propose phonon spectroscopy by electric measurements of the low-temperature conductance of coupled-quantum dots, specifically employing dephasing of the quantum electronic transport by the phonons. The setup we consider consists of a…

介观与纳米尺度物理 · 物理学 2013-05-29 A. Ueda , O. Entin-Wohlman , M. Eto , A. Aharony

We theoretically investigate the transport properties of a molecule embedded in one arm of a mesoscopic Aharonov-Bohm interferometer. Due to the presence of phonons the molecule level position ($\epsilon_d$) and the electron-electron…

介观与纳米尺度物理 · 物理学 2015-05-18 Jong Soo Lim , Rosa Lopez , Gloria Platero , Pascal Simon

We report first principles analysis of electron-phonon coupling in molecular devices under external bias voltage and during current flow. Our theory and computational framework are based carrying out density functional theory within the…

材料科学 · 物理学 2009-11-11 N. Sergueev , D. Roubtsov , Hong Guo