Multiple-quantized vortices in rotating LOFF state of ultracold Fermi superfluid gas
Quantum Gases
2009-10-22 v1 Superconductivity
High Energy Physics - Phenomenology
Nuclear Theory
Abstract
A rotating ultracold S-wave superfluid Fermi gas is considered, when the population imbalance (or equivalently the mismatch in chemical potentials) corresponds to the Larkin-Ovchinnikov-Fulde-Ferrell (LOFF) state in the vicinity of the Lifshitz critical point. It is shown that under these conditions the critical angular velocity in two-dimensional systems is an oscillating function of temperature and population imbalance giving rise to reentrant superfluid phases. This leads to vortex lattices with multiple-quantized circulation quanta. The reason for this behavior is the population by Cooper pairs of the Landau levels above the lowest one.
Keywords
Cite
@article{arxiv.0904.4034,
title = {Multiple-quantized vortices in rotating LOFF state of ultracold Fermi superfluid gas},
author = {Miodrag L. Kulic and Armen Sedrakian and Dirk H. Rischke},
journal= {arXiv preprint arXiv:0904.4034},
year = {2009}
}
Comments
5 pages, 1 figure