Noise of a chargeless Fermi liquid
Mesoscale and Nanoscale Physics
2018-01-09 v1
Abstract
We construct a Fermi liquid theory to describe transport in a superconductor-quantum dot- normal metal junction close to the singlet-doublet (parity changing) transition of the dot. Though quasiparticles do not have a definite charge in this chargeless Fermi liquid, in case of particle-hole symmetry, a mapping to the Anderson model unveils a hidden U(1) symmetry and a corresponding pseudo-charge. In contrast to other correlated Fermi-liquids, the back scattering noise reveals an effective charge equal to the charge of Cooper pairs, . In addition,we find a strong suppression of noise when the linear conductance is unitary, even for its non-linear part.
Keywords
Cite
@article{arxiv.1701.06215,
title = {Noise of a chargeless Fermi liquid},
author = {Catalin Pascu Moca and Christophe Mora and Ireneusz Weymann and Gergely Zarand},
journal= {arXiv preprint arXiv:1701.06215},
year = {2018}
}
Comments
5 pages, 4 figures and 5 pages of supplementary material with 3 figures