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arXiv · 1005.0668

Degenerate Fermi Gas of $^{87}$Sr

B. J. DeSalvo·M. Yan·P. G. Mickelson·Y. N. Martinez de Escobar·T. C. Killian
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Abstract

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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B. J. DeSalvo, M. Yan, P. G. Mickelson, Y. N. Martinez de Escobar, T. C. Killian. 2010-05-05. Degenerate Fermi Gas of $^{87}$Sr. https://doi.org/10.1103/physrevlett.105.030402

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