Bose-Einstein condensation of 162Dy and 160Dy
Yijun Tang, Nathaniel Q. Burdick, Kristian Baumann, and Benjamin L., Lev
TL;DR
This paper reports the successful creation of Bose-Einstein condensates of two dysprosium isotopes, 162Dy and 160Dy, demonstrating control over magnetic properties and atom numbers, with potential for rapid production.
Contribution
It presents the first BEC of 162Dy with a large atom number and demonstrates a method to produce 160Dy BEC using Fano-Feshbach resonance.
Findings
162Dy BEC with 10^5 atoms below 50 nK
160Dy BEC with 10^3 atoms via Fano-Feshbach tuning
162Dy BEC size exceeds previous 164Dy BEC by an order of magnitude
Abstract
We report Bose-Einstein condensation of two isotopes of the highly magnetic element dysprosium: 162Dy and 160Dy. For 162Dy, condensates with 10^5 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 10^3 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.
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