Trapping ultracold dysprosium: a highly magnetic gas for dipolar physics

Details Trapping ultracold dysprosium: a highly magnetic gas for dipolar physics Trapping ultracold dysprosium: a highly magnetic gas for dipolar physics

2009-12-01

arxiv.org/abs/0912.0050v3

Phys. Rev. Lett. 104, 063001 (2010)

Physics

Atomic Physics

4+ pages, 4 figures; minor edits in V3

Scientific paper

10.1103/PhysRevLett.104.063001

Ultracold dysprosium gases, with a magnetic moment ten times that of alkali atoms and equal only to terbium as the most magnetic atom, are expected to exhibit a multitude of fascinating collisional dynamics and quantum dipolar phases, including quantum liquid crystal physics. We report the first laser cooling and trapping of half a billion Dy atoms using a repumper-free magneto-optical trap (MOT) and continuously loaded magnetic confinement, and we characterize the trap recycling dynamics for bosonic and fermionic isotopes. The first inelastic collision measurements in the few partial wave, 100 uK to 1 mK, regime are made in a system possessing a submerged open electronic f-shell. In addition, we observe unusual stripes of intra-MOT <10 uK sub-Doppler cooled atoms.

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