A chromium dipolar Fermi sea
Quantum Gases
2015-06-23 v1
Abstract
We report on the production of a degenerate Fermi gas of 53Cr atoms, polarized in the state F=9/2, m_F=-9/2, by sympathetic cooling with bosonic S=3, m_S=-3 52Cr atoms. We load in an optical dipole trap 3.10^4 53Cr atoms with 10^6 52Cr atoms. Despite this initial small number of fermionic atoms, we reach a final temperature of T=0.6 T_f (Fermi temperature), with up to 10^3 53Cr atoms. This surprisingly efficient evaporation stems from an inter-isotope scattering length |a_{BF}| = (85+/- 10) a_{Bohr} which is small enough to reduce evaporative losses of the fermionic isotope, but large enough to insure thermalization.
Cite
@article{arxiv.1411.4634,
title = {A chromium dipolar Fermi sea},
author = {B. Naylor and A. Reigue and E. Maréchal and O. Gorceix and B. Laburthe-Tolra and L. Vernac},
journal= {arXiv preprint arXiv:1411.4634},
year = {2015}
}
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