Bose–Einstein condensation of 162Dy and 160Dy
We report Bose–Einstein condensation of two isotopes of the highly magnetic element dysprosium: 162Dy and 160 ?> Dy. For 162Dy, condensates with 105 atoms form below T = 50 nK. We find the evaporation efficiency for the isotope 160Dy to be poor; however, by utilizing a low-field Fano–Feshbach resonance to carefully change the scattering properties, it is possible to produce a Bose–Einstein condensate of 160Dy with 103 atoms. The 162Dy BEC reported is an order of magnitude larger in atom number than that of the previously reported 164Dy BEC, and it may be produced within 18 s.