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Strongly Dipolar Bose-Einstein Condensate of Dysprosium

Mingwu LuDepartment of Applied Physics, Stanford University, Stanford, California 94305, USANathaniel BurdickDepartment of Applied Physics, Stanford University, Stanford, California 94305, USASeo Ho YounDepartment of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USABenjamin LevDepartment of Applied Physics, Stanford University, Stanford, California 94305, USA

2011en

ABI

Annotatsiya

We report the Bose-Einstein condensation (BEC) of the most magnetic element, 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 narrowline magneto-optical trap. Nearly pure condensates of 1.5 × 10(4) (164)Dy 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 a high-magnetic field.

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DOI: 10.1103/physrevlett.107.190401

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