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The thermoelectric effect in a quantum dot (QD) attached to two leads in the presence of microwave fields is studied by using the Keldysh nonequilibrium Green function technique. When the microwave is applied only on the QD and in the…

Mesoscale and Nanoscale Physics · Physics 2014-07-17 Feng Chi , Yonatan Dubi

Thermoelectric effects in a double quantum dot system coupled to external magnetic/nonmagnetic leads are investigated theoretically. The basic thermoelectric transport characteristics, like thermopower, electronic contribution to heat…

Mesoscale and Nanoscale Physics · Physics 2015-03-19 Piotr Trocha , Józef Barnaś

The traditional approach to studying near-field thermal transfer is based on fluctuational electrodynamics. However, this approach may not be suitable for nonequilibrium states due to dynamic drivings. In our work, we introduce a…

Mesoscale and Nanoscale Physics · Physics 2024-02-26 Gaomin Tang , Jian-Sheng Wang

We investigate the nonlinear regime of charge and energy transport through Coulomb-blockaded quantum dots. We discuss crossed effects that arise when electrons move in response to thermal gradients (Seebeck effect) or energy flows in…

Mesoscale and Nanoscale Physics · Physics 2014-09-30 Miguel A. Sierra , David Sanchez

The study of quantum heat transport in superconducting circuits is significant for further understanding the connection between quantum mechanics and thermodynamics, and for possible applications for quantum information. The first…

Quantum Physics · Physics 2022-07-27 Christoforus Dimas Satrya , Andrew Guthrie , Ilari Mäkinen , Jukka P. Pekola

The thermoelectric transport properties of nanostructured devices continue to attract attention from theorists and experimentalist alike as the spatial confinement allows for a controlled approach to transport properties of correlated…

Strongly Correlated Electrons · Physics 2015-06-12 Stefan Kirchner , Farzaneh Zamani , Enrique Muñoz

The role of energy exchange between a quantum system and its environment is investigated from the perspective of the Onsager conductance matrix. We consider the thermoelectric linear transport of an interacting quantum dot coupled to two…

Mesoscale and Nanoscale Physics · Physics 2017-06-07 Guillem Rosselló , Rosa López , Rafael Sánchez

We study the effect of a magnetic field on the conductance through a strongly interacting quantum dot by using the finite temperature extension of Wilson's numerical renormalization group method to dynamical quantities. The quantum dot has…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 T. A. Costi

Quantum thermal transport and two-photon statistics serve as two representative nonequilibrium features in circuit quantum electrodynamics systems. Here, we investigate quantum heat flow and two-photon correlation function at steady-state…

Quantum Physics · Physics 2021-09-07 Zhe-Huan Chen , Han-Xin Che , Zhe-Kai Chen , Chen Wang , Jie Ren

In this paper, we examine the conditions under which the nonlinear transport theory is inescapable, when a correlated quantum dot is symmetrically coupled to two leads submitted to temperature and voltage biases. By detailed numerical…

Mesoscale and Nanoscale Physics · Physics 2014-12-02 J. Azema , P. Lombardo , A. -M. Daré

The interplay between the Kondo effect and the inter-dot magnetic interaction in a coupled-dot system is studied. An exact result for the transport properties at zero temperature is obtained by diagonalizing a cluster, composed by the…

Strongly Correlated Electrons · Physics 2009-10-31 C. A. Büsser , E. V. Anda , A. L Lima , Maria A. Davidovich , G. Chiappe

A theory of transverse electron transport coupled with heat transfer in semiconductor thin films is developed conceptually modeling structures of modern electronics. The transverse currents generate Joule heat with positive feedback through…

Disordered Systems and Neural Networks · Physics 2015-06-05 V. G. Karpov

In the present work, we theoretically study the nonlinear regime of charge transport through a quantum dot coupled to the source and drain reservoirs. The investigation is carried out using a nonequilibrium Green's functions formalism…

Mesoscale and Nanoscale Physics · Physics 2015-12-01 Natalya A. Zimbovskaya

Due to the Fermionic nature of carriers, correlations between electric currents flowing through two different contacts attached to a conductor present a negative sign. Possibility for positive cross-correlations has been demonstrated in…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Fabio Taddei , Rosario Fazio

We consider a strongly interacting quantum dot connected to two leads held at quite different temperatures. Our aim is to study the behavior of the Kondo effect in the presence of large thermal biases. We use three different approaches,…

Mesoscale and Nanoscale Physics · Physics 2017-09-04 Miguel A. Sierra , David Sanchez , Rosa Lopez

We study thermoelectric transport through double quantum dots system with spin-dependent interdot coupling and ferromagnetic electrodes by means of the non-equilibrium Green function in the linear response regime. It is found that the…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 Qiang Wang , Haiqing Xie , Hujun Jiao , Zhi-Jian Li , Yi-Hang Nie

I discuss thermoelectric properties of a quantum dot coupled to one normal and one superconducting lead in the presence of Kondo effect and Andreev scattering. I will focus on conductance, thermal conductance, thermopower and related…

Mesoscale and Nanoscale Physics · Physics 2008-10-07 Mariusz Krawiec

A quantum thermal transistor is designed by the strong coupling between one qubit and one qutrit which are in contact with three heat baths with different temperatures. The thermal behavior is analyzed based on the master equation by both…

Quantum Physics · Physics 2019-03-12 Bao-qing Guo , Tong Liu , Chang-shui Yu

We report on an experimental and theoretical study of nonlocal transport in superconductor hybrid structures, where two normal-metal leads are attached to a central superconducting wire. As a function of voltage bias applied to both…

Superconductivity · Physics 2013-11-15 S. Kolenda , M. J. Wolf , D. S. Golubev , A. D. Zaikin , D. Beckmann

Charge and heat transport through a single molecule tunnel-coupled to external normal electrodes have been studied. The molecule with sufficiently strong interaction between lectrons and vibrational internal degrees of freedom can be…

Mesoscale and Nanoscale Physics · Physics 2012-04-16 Karol Izydor Wysokinski