The density of states of proximitized normal nanowires interrupting superconducting rings can be tuned by the magnetic flux piercing the loop. Using these as the contacts of a single-electron transistor allows to control the energetic mirror asymmetry of the conductor, this way introducing rectification properties. In particular, we show that the system works as a diode that rectifies both charge and heat currents and whose polarity can be reversed by the magnetic field and a gate voltage. We emphasize the role of dissipation at the island. The coupling to substrate phonons enhances the effect and furthermore introduces a channel for phase tunable conversion of heat exchanged with the environment into electrical current.
@article{arxiv.1904.13243,
title = {Reversible thermal diode and energy harvester with a superconducting quantum interference single-electron transistor},
author = {Donald Goury and Rafael Sánchez},
journal= {arXiv preprint arXiv:1904.13243},
year = {2019}
}