Spin-polarized droplets in the unitary Fermi gas
Abstract
We demonstrate the existence of a new type of spatially localized excitations in the unitary Fermi gas: spin polarized droplets with a peculiar internal structure involving the abrupt change of the pairing phase at the surface of the droplet. It resembles the structure of the Josephson- junction occurring when a slice of a ferromagnet is sandwiched between two superconductors. The stability of the impurity is enhanced by the mutual interplay between the polarization effects and the pairing field, resulting in an exceptionally long-lived state. The prospects for its realization in experiment are discussed.
Keywords
Cite
@article{arxiv.1811.00446,
title = {Spin-polarized droplets in the unitary Fermi gas},
author = {Piotr Magierski and Buğra Tüzemen and Gabriel Wlazłowski},
journal= {arXiv preprint arXiv:1811.00446},
year = {2019}
}
Comments
Manuscript with included Supplementary Material. Published version. Accompanying movies are available at http://wlazlowski.fizyka.pw.edu.pl/supplement/2/