Phase-coherent heat circulators with normal or superconducting contacts
Journal article, 2021

We investigate heat circulators where a phase coherent region is contacted by three leads that are either normal- or superconducting. A magnetic field, and potentially the superconducting phases, allow to control the preferential direction of the heat flow between the three-different temperature-biased contacts. The main goal of this study is to analyze the requirements for heat circulation in nonideal devices, in particular focusing on sample-to-sample variations. Quite generally, we find that the circulation performance of the devices is good as long as only a few transport channels are involved. We compare the performance of circulators with normal conducting contacts to those with superconducting contacts and find that the circulation coefficients are essentially unchanged.

Author

Matteo Acciai

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Fatemeh Hajiloo

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Fabian Hassler

RWTH Aachen University

Janine Splettstoesser

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

PHYSICAL REVIEW B

2469-9950 (ISSN) 2469-9969 (eISSN)

Vol. 103 8 085409

Värmeströmsfluktuationer och dens inverkan på lokala temperaturer och potentialer

Swedish Research Council (VR), 2019-01-01 -- 2022-12-31.

Areas of Advance

Nanoscience and Nanotechnology (SO 2010-2017, EI 2018-)

Subject Categories

Energy Engineering

Other Physics Topics

Other Materials Engineering

DOI

10.1103/PhysRevB.103.085409

More information

Latest update

4/22/2021