A Strongly Dipolar Bose-Einstein Condensate of Dysprosium

2011/08/31 by Mingwu Lu, Nathaniel Q. Burdick, Seo Ho Youn +1 · 4 citations
Physics and Astronomy · #cond-mat.quant-gas #physics.atom-ph #quant-ph

paper · pdf · doi:10.1103/physrevlett.107.190401

published as Phys. Rev. Lett. 107, 190401 (2011) · 4 pages plus refs on fifth, 3 figures; new version includes edits based on referee's comments

arxiv created 2011/09/27 · arxiv updated 2011/12/15

Abstract

We report the Bose-Einstein condensation (BEC) of the most magnetic atom, dysprosium. The Dy BEC is the first for an open f-shell lanthanide (rare-earth) element and is produced via forced evaporation in a crossed optical dipole trap loaded by an unusual, blue-detuned and spin-polarized narrow-line magneto-optical trap. Nearly pure condensates of 1.5x10⁴ 164Dy atoms form below T = 30 nK. We observe that stable BEC formation depends on the relative angle of a small polarizing magnetic field to the axis of the oblate trap, a property of trapped condensates only expected in the strongly dipolar regime. This regime was heretofore only attainable in Cr BECs via a Feshbach resonance accessed at high magnetic field.

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