title: Degenerate Fermi gas of (87)Sr.
abstract: We report quantum degeneracy in a gas of ultracold 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(-0.06)(+0.05). 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) ∼0.5.
authors.affiliation: Department of Physics and Astronomy, Rice University, Houston, Texas, 77251, USA.
authors.forename: B J
authors.initials: BJ
authors.lastname: DeSalvo
authors.forename: M
authors.initials: M
authors.lastname: Yan
authors.forename: P G
authors.initials: PG
authors.lastname: Mickelson
authors.forename: Y N
authors.initials: YN
authors.lastname: Martinez de Escobar
authors.forename: T C
authors.initials: TC
authors.lastname: Killian