Landauer Formula for a Superconducting Quantum Point Contact
arXiv:1906.01682 · doi:10.1103/PhysRevLett.123.067001
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.
v2: 5+6 pages, 2+1 figures; Corresponds to published version