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We propose an efficient approach for simultaneous prediction of thermal and electronic transport properties in complex materials. Firstly, a highly efficient machine-learned neuroevolution potential is trained using reference data from…

材料科学 · 物理学 2024-04-08 Zheyong Fan , Yang Xiao , Yanzhou Wang , Penghua Ying , Shunda Chen , Haikuan Dong

We investigate the thermoelectric transport properties of an interacting parallel double quantum dot in the Coulomb-blockade regime. Building on an analytical solution based on an equation-of-motion technique, we extend the formalism for…

介观与纳米尺度物理 · 物理学 2025-10-24 Nahual Sobrino

Fermionic superfluid junctions typically exhibit suppressed thermal and spin transport due to the presence of a pairing gap but allow coherent particle transport. While dissipation generally weakens coherent transport, it can also induce…

Simulation results of the thermal conductivity ${\cal L}$ of Dissipative Particle Dynamics model with Energy Conservation (DPDE) are reported. We also present an analysis of the transport equations and the transport coefficients for DPDE…

统计力学 · 物理学 2015-06-24 Josep Bonet Avalos , Allan D. Mackie

The transport properties of junctions composed of a central region tunnel-coupled to external electrodes are frequently studied within the single-impurity Anderson model with Hubbard on-site interaction. In the present work, we supplement…

介观与纳米尺度物理 · 物理学 2021-10-05 Ulrich Eckern , Karol I. Wysokiński

Based on the algebraic equation of motion (AEOM) method, we investigate the transport properties of a quantum dot. We obtain an analytical expression for the dot electron single-particle Green's function, and based on this expression, we…

介观与纳米尺度物理 · 物理学 2023-05-05 Jiangqi Mao , Houmin Du , Yuliang Liu

Thermodynamics in quantum circuits aims to find improved functionalities of thermal machines, highlight fundamental phenomena peculiar to quantum nature in thermodynamics, and point out limitations in quantum information processing due to…

We analyze the heat current traversing a quantum dot sandwiched between a ferromagnetic and a superconducting electrode. The heat flow generated in response to a voltage bias presents rectification as a function of the gate potential…

介观与纳米尺度物理 · 物理学 2018-04-24 Sun-Yong Hwang , David Sanchez

Recent progress in the field of molecular electronics has revealed the fundamental importance of the coupling between the electronic degrees of freedom and specific vibrational modes. Considering the examples of a molecular dimer and a…

介观与纳米尺度物理 · 物理学 2017-02-22 Jakub K. Sowa , Jan A. Mol , G. Andrew D. Briggs , Erik M. Gauger

We investigate theoretically the balance of the static magnetic and the dynamical photon forces in the electron transport through a quantum dot in a photon cavity with a single photon mode. The quantum dot system is connected to external…

介观与纳米尺度物理 · 物理学 2016-08-03 Nzar Rauf Abdullah , Chi-Shung Tang , Andrei Manolescu , Vidar Gudmundsson

This review presents a thermodynamic perspective on quantum coupled transport processes in nanoscale systems. Our analysis is formulated within the framework of entropy production rate, the central quantity governing non-equilibrium…

量子物理 · 物理学 2026-03-09 Shuvadip Ghosh , Arnab Ghosh

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

We discuss out-of-equilibrium population imbalances between different orbital states due to applied thermal gradients. This purely thermoelectric orbital effect appears quite generically in nanostructures with a pseudospin degree of…

介观与纳米尺度物理 · 物理学 2014-01-06 Jong Soo Lim , Rosa Lopez , David Sanchez

Open fermion systems with energy-independent bilinear coupling to a fermionic environment have been shown to obey a general duality relation [Phys. Rev. B 93, 81411 (2016)] which allows for a drastic simplification of time-evolution…

介观与纳米尺度物理 · 物理学 2018-12-12 J. Schulenborg , J. Splettstoesser , M. R. Wegewijs

We investigate the steady-state transport characteristics of a quantum dot system consisting of a single energy level embedded between two reservoirs under the influence of both the temperature gradient and bias voltage. Within tailored…

介观与纳米尺度物理 · 物理学 2024-08-16 Yanchao Zhang , Xiaolong Lü

A theoretical model of a single molecule coupled to many vibronic modes is presented. At low energies, transport is dominated by electron-vibron processes where transfer of an electron through the dot is accompanied by the…

介观与纳米尺度物理 · 物理学 2011-08-19 Abdullah Yar , Andrea Donarini , Sonja Koller , Milena Grifoni

A theoretical model of a single molecule coupled to many vibronic modes is presented. At low energies, transport is dominated by electron-vibron processes where transfer of an electron through the dot is accompanied by the…

介观与纳米尺度物理 · 物理学 2015-03-17 Abdullah Yar , Andrea Donarini , Sonja Koller , Milena Grifoni

Interfaces play a crucial role in energy transport at the nanoscale. However, direct experimental observations of interfacial thermal conductance across molecular junctions have remained challenging due to the high spatiotemporal resolution…

化学物理 · 物理学 2025-12-23 Md. Shahriar Hossain Shuvo , Xing He , Mithun Ghosh , Ding-Shyue Yang

We study the thermoelectric properties and heat-to-work conversion performance of an interacting, multi-level quantum dot (QD) weakly coupled to electronic reservoirs. We focus on the sequential tunneling regime. The dynamics of the charge…

介观与纳米尺度物理 · 物理学 2017-06-29 Paolo Andrea Erdman , Francesco Mazza , Riccardo Bosisio , Giuliano Benenti , Rosario Fazio , Fabio Taddei

Transport equations for autonomous driven Fermionic quantum systems are derived with the help of statistical assumptions and of the Markov approximation. The statistical assumptions hold if the system consists of subsystems within which…

核理论 · 物理学 2022-04-20 Hans A. Weidenmüller