Dynamical spin polarization of excess quasi-particles in superconductors
Superconductivity
2020-09-02 v1 Mesoscale and Nanoscale Physics
Abstract
We show that the annihilation dynamics of excess quasi-particles in superconductors may result in the spontaneous formation of large spin-polarized clusters. This presents a novel scenario for spontaneous spin polarization. We estimate the relevant scales for aluminum, finding the feasibility of clusters with total spin that could be spread over microns. The fluctuation dynamics of such large spins may be detected by measuring the flux noise in a loop hosting a cluster.
Cite
@article{arxiv.1912.10661,
title = {Dynamical spin polarization of excess quasi-particles in superconductors},
author = {Julia S. Meyer and Manuel Houzet and Yuli V. Nazarov},
journal= {arXiv preprint arXiv:1912.10661},
year = {2020}
}
Comments
5+3 pages, 2+1 figures