Degenerate Fermi Gas of $^{87}$Sr

Details Degenerate Fermi Gas of $^{87}$Sr Degenerate Fermi Gas of $^{87}$Sr

2010-05-05

arxiv.org/abs/1005.0668v1

Physics

Condensed Matter

Quantum Gases

4 pages, 3 figures

Scientific paper

We report quantum degeneracy in a gas of ultra-cold fermionic $^{87}$Sr atoms. By evaporatively cooling a mixture of spin states in an optical dipole trap for 10.5\,s, we obtain samples well into the degenerate regime with $T/T_F=0.26^{+.05}_{-.06}$. The main signature of degeneracy is a change in the momentum distribution as measured by time-of-flight imaging, and we also observe a decrease in evaporation efficiency below $T/T_F \sim 0.5$.

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