Destroying superfluidity by rotating a fermi gas at unitarity
Year: 2008
Authors: Bausmerth I., Recati A., Stringari S.
Autors Affiliation: Dipartimento di Fisica, Università di Trento and CNR-INFM BEC Center, I-38050 Povo, Trento, Italy
Abstract: We study the effect of the rotation on a harmonically trapped Fermi gas at zero temperature under the assumption that vortices are not formed. We show that at unitarity the rotation produces a phase separation between a nonrotating superfluid (S) core and a rigidly rotating normal (N) gas. The interface between the two phases is characterized by a density discontinuity n(N)/n(S)=0.85, independent of the angular velocity. The depletion of the superfluid and the angular momentum of the rotating configuration are calculated as a function of the angular velocity. The conditions of stability are also discussed and the critical angular velocity for the onset of a spontaneous quadrupole deformation of the interface is evaluated.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 100 (7) Pages from: 070401 to: 070401
KeyWords: Fermi superfluidity; Rotating gas; DOI: 10.1103/PhysRevLett.100.070401ImpactFactor: 7.180Citations: 21data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-24References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here
