DC transport in a dissipative superconducting quantum point contact
Quantum Gases
2023-10-10 v2 Mesoscale and Nanoscale Physics
Superconductivity
Abstract
We study the current-voltage characteristics of a superconducting junction with particle losses at the contacts. We adopt the Keldysh formalism to compute the steady-state current for varying transmission of the contact. In the low transmission regime, the dissipation leads to an enhancement of the current at low bias, a nonmonotonic dependence of current on dissipation, and the emergence of new structures in the current-voltage curves. The effect of dissipation by particle loss is found to be qualitatively different from that of a finite temperature and a finite inelastic scattering rate in the reservoirs.
Keywords
Cite
@article{arxiv.2304.00928,
title = {DC transport in a dissipative superconducting quantum point contact},
author = {Anne-Maria Visuri and Jeffrey Mohan and Shun Uchino and Meng-Zi Huang and Tilman Esslinger and Thierry Giamarchi},
journal= {arXiv preprint arXiv:2304.00928},
year = {2023}
}
Comments
13 pages, 7 figures