Landauer Formula for a Superconducting Quantum Point Contact
Superconductivity
2019-08-14 v2 Mesoscale and Nanoscale Physics
Abstract
We generalize the Landauer formula to describe the dissipative electron transport through a superconducting point contact. The finite-temperature, linear-in-bias, dissipative DC conductance is expressed in terms of the phase- and energy-dependent scattering matrix of the Bogoliubov quasiparticles in the quantum point contact. The derived formula is also applicable to hybrid superconducting-normal structures and normal contacts, where it agrees with the known limits of Andreev reflection and normal-state conductance, respectively.
Cite
@article{arxiv.1906.01682,
title = {Landauer Formula for a Superconducting Quantum Point Contact},
author = {Sergey S. Pershoguba and Thomas Veness and Leonid I. Glazman},
journal= {arXiv preprint arXiv:1906.01682},
year = {2019}
}
Comments
v2: 5+6 pages, 2+1 figures; Corresponds to published version