Bose-Einstein condensation of 162Dy and 160Dy

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...

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Veröffentlicht in:	arXiv.org 2014-11
Hauptverfasser:	Tang, Yijun, Burdick, Nathaniel Q, Baumann, Kristian, Lev, Benjamin L
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensates Condensation Dysprosium isotopes Helium Physics - Atomic Physics Physics - Quantum Gases Physics - Quantum Physics Resonance scattering
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Zusammenfassung:	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.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1411.3069