Aarhus University Seal / Aarhus Universitets segl

Georg Bruun

Anisotropic relaxation dynamics in a dipolar Fermi gas driven out of equilibrium

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

  • K. Aikawa, University of Innsbruck, Østrig
  • A. Frisch, University of Innsbruck, Østrig
  • M. Mark, University of Innsbruck, Østrig
  • S. Baier, University of Innsbruck, Østrig
  • R. Grimm, University of Innsbruck, Østrig
  • J. L. Bohn, University of Colorado, Boulder, CO, USA
  • D. S. Jin, University of Colorado, Boulder, CO, USA
  • Georg Bruun
  • F. Ferlaino, University of Innsbruck, Østrig
We report on the observation of a large anisotropy in the rethermalization dynamics of an ultracold dipolar Fermi gas driven out of equilibrium. Our system consists of an ultracold sample of strongly magnetic $^{167}$Er fermions, spin-polarized in the lowest Zeeman sublevel. In this system, elastic collisions arise purely from universal dipolar scattering. Based on cross-dimensional rethermalization experiments, we observe a strong anisotropy of the scattering, which manifests itself in a large angular dependence of the thermal relaxation dynamics. Our result is in very good agreement with recent theoretical predictions. Furthermore, we measure the rethermalization rate as a function of temperature for different angles and find that the suppression of collisions by Pauli blocking is not influenced by the dipole orientation.
TidsskriftPhysical Review Letters
Antal sider5
StatusUdgivet - 23 dec. 2014


  • cond-mat.quant-gas, physics.atom-ph

Se relationer på Aarhus Universitet Citationsformater

ID: 84056541