Bose-Einstein Condensation of Erbium

by K. Aikawa, A. Frisch, M. Mark, S. Baier, A. Rietzler, R. Grimm, F. Ferlaino
Abstract:
We report on the achievement of Bose-Einstein condensation of erbium atoms and on the observation of magnetic Feshbach resonances at low magnetic fields. By means of evaporative cooling in an optical dipole trap, we produce pure condensates of Er168, containing up to 7×104 atoms. Feshbach spectroscopy reveals an extraordinary rich loss spectrum with six loss resonances already in a narrow magnetic-field range up to 3 G. Finally, we demonstrate the application of a low-field Feshbach resonance to produce a tunable dipolar Bose-Einstein condensate and we observe its characteristic d-wave collapse.
Reference:
Bose-Einstein Condensation of Erbium,
K. Aikawa, A. Frisch, M. Mark, S. Baier, A. Rietzler, R. Grimm, F. Ferlaino,
Phys. Rev. Lett., volume 108, 2012.
Bibtex Entry:
@article{PhysRevLett.108.210401,
  title = {Bose-Einstein Condensation of Erbium},
  author = {Aikawa, K. and Frisch, A. and Mark, M. and Baier, S. and Rietzler, A. and Grimm, R. and Ferlaino, F.},
  journal = {Phys. Rev. Lett.},
  volume = {108},
  issue = {21},
  pages = {210401},
  numpages = {5},
  year = {2012},
  month = {May},
  abstract = {We report on the achievement of Bose-Einstein condensation of erbium atoms and on the observation of magnetic Feshbach resonances at low magnetic fields. By means of evaporative cooling in an optical dipole trap, we produce pure condensates of Er168, containing up to 7×104 atoms. Feshbach spectroscopy reveals an extraordinary rich loss spectrum with six loss resonances already in a narrow magnetic-field range up to 3 G. Finally, we demonstrate the application of a low-field Feshbach resonance to produce a tunable dipolar Bose-Einstein condensate and we observe its characteristic d-wave collapse.},
  publisher = {American Physical Society},
  doi = {10.1103/PhysRevLett.108.210401},
  url = {http://link.aps.org/doi/10.1103/PhysRevLett.108.210401},
  arXiv = {http://arxiv.org/abs/1204.1725}
}