Observation of superfluidity in a strongly correlated two-dimensional Fermi gas-Reference-Cited by-同舟云学术

Observation of superfluidity in a strongly correlated two-dimensional Fermi gas

Published:2021-05-21 Issue:6544 Volume:372 Page:844-846
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Sobirey Lennart¹²^ORCID,Luick Niclas¹²^ORCID,Bohlen Markus¹²³^ORCID,Biss Hauke¹²^ORCID,Moritz Henning¹²^ORCID,Lompe Thomas¹²^ORCID

Affiliation:

1. Institut für Laserphysik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.

2. The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.

3. Laboratoire Kastler Brossel, ENS-PSL Research University, CNRS, Sorbonne Université, Collège de France, 24 rue Lhomond, 75005 Paris, France.

Abstract

Finding the breaking point A superfluid can flow without viscosity but only if the speed of the flow is lower than the so-called critical velocity. Sobirey et al. measured the critical velocity of a system of ultracold fermionic atoms confined to two dimensions. The researchers trapped a gas of lithium-6 atoms in a box-shaped potential and then moved another, periodic potential through the trap. The response of the gas to this perturbation showed a sudden increase when the speed of the periodic potential reached the critical velocity. Science , abc8793, this issue p. 844

Funder

Seventh Framework Programme

European Research Council

Deutsche Forschungsgemeinschaft

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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