Critical Velocity and Dissipation of an Ultracold Bose-Fermi Counterflow

Physical Review Letters
M DelehayeC Salomon

Abstract

We study the dynamics of counterflowing bosonic and fermionic lithium atoms. First, by tuning the interaction strength we measure the critical velocity v_{c} of the system in the BEC-BCS crossover in the low temperature regime and we compare it to the recent prediction of Castin et al., C. R. Phys. 16, 241 (2015). Second, raising the temperature of the mixture slightly above the superfluid transitions reveals an unexpected phase locking of the oscillations of the clouds induced by dissipation.

References

Sep 16, 2000·Physical Review Letters·A P ChikkaturW Ketterle
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Mar 5, 2004·Physical Review Letters·C A RegalD S Jin
Jun 24, 2005·Nature·M W ZwierleinW Ketterle
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Mar 21, 2008·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Chung-Hsien ChouB L Hu
May 17, 2013·Nature·Leonid A SidorenkovSandro Stringari
Jul 19, 2014·Science·I Ferrier-BarbutC Salomon
Jan 24, 2015·Physical Review Letters·Wei Zheng, Hui Zhai
Mar 21, 2015·Physical Review Letters·Wolf WeimerHenning Moritz

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Citations

Mar 11, 2017·Physical Review Letters·Yuzhu JiangHui Zhai
Feb 18, 2017·Physical Review Letters·Richard RoySubhadeep Gupta
Nov 4, 2017·Physical Review Letters·Noam MatzliahNir Davidson
May 15, 2018·Physical Review Letters·Eleonora FavaGabriele Ferrari
Aug 8, 2018·Physical Review Letters·Matthias WenzelIgor Ferrier-Barbut
Oct 16, 2016·Physical Review Letters·Xing-Can YaoJian-Wei Pan
Dec 15, 2018·Physical Review Letters·Jee Woo ParkY Shin
Sep 7, 2019·Physical Review Letters·Thomas L SchmidtPeter P Orth

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