Ferromagnetic spin correlations in a few-fermion system
Quantum Gases
2013-07-02 v3 Mesoscale and Nanoscale Physics
Strongly Correlated Electrons
Abstract
We study the spin correlations of a few fermions in a quasi one-dimensional trap. Exact diagonalization calculations demonstrate that repulsive interactions between the two species drives ferromagnetic correlations. The ejection probability of an atom provides an experimental probe of the spin correlations. With more than five atoms trapped, the system approaches the itinerant Stoner limit. Losses to Feshbach molecules are suppressed by the discretization of energy levels when fewer than seven atoms are trapped.
Keywords
Cite
@article{arxiv.1304.3299,
title = {Ferromagnetic spin correlations in a few-fermion system},
author = {P. O. Bugnion and G. J. Conduit},
journal= {arXiv preprint arXiv:1304.3299},
year = {2013}
}