Nonequilibrium reservoir engineering of a biased coherent conductor for hybrid energy transport in nanojunctions

doi:10.1088/1674-1056/abb3ee

Abstract We show that a current-carrying coherent electron conductor can be treated as an effective bosonic energy reservoir involving different types of electron-hole pair excitations. For weak electron-boson coupling, hybrid energy transport between nonequilibrium electrons and bosons can be described by a Landauer-like formula. This allows for unified account of a variety of heat transport problems in hybrid electron-boson systems. As applications, we study the non-reciprocal heat transport between electrons and bosons, thermoelectric current from a cold-spot, and electronic cooling of the bosons. Our unified framework provides an intuitive way of understanding hybrid energy transport between electrons and bosons in their weak coupling limit. It opens the way of nonequilibrium reservoir engineering for efficient energy control between different quasi-particles at the nanoscale.

Keywords: electron-hole pair hybrid energy transport nanojunction electron-phonon interaction

Received: 22 June 2020
Revised: 27 August 2020
Accepted manuscript online: 01 September 2020

PACS:	05.70.Ln	(Nonequilibrium and irreversible thermodynamics)
	63.20.kd	(Phonon-electron interactions)
	63.22.-m	(Phonons or vibrational states in low-dimensional structures and nanoscale materials)
	85.65.+h	(Molecular electronic devices)

Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0403501), the National Natural Science Foundation of China (Grant No. 21873033), and the Program for HUST Academic Frontier Youth Team.

Corresponding Authors: ^†Corresponding author. E-mail: llnian@hust.edu.cn ^‡Corresponding author. E-mail: jtlu@hust.edu.cn

Cite this article:

"Bing-Zhong Hu(胡柄中), Lei-Lei Nian(年磊磊), and Jing-Tao Lü(吕京涛) Nonequilibrium reservoir engineering of a biased coherent conductor for hybrid energy transport in nanojunctions 2020 Chin. Phys. B 29 120505

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