Experiments on a mixture of bosonic and fermionic superfluids

Add to your list(s) Download to your calendar using vCal

• Igor Ferrier-Barbut (Ecole normale Superieure, Paris)
• Friday 11 July 2014, 11:00-12:00
• Rutherford building, Seminar Room B.

If you have a question about this talk, please contact pjh65.

We will present the experimental realization of a mixture of Bose and Fermi superfluids. Our mixture is composed of a weakly-interacting 7Li BEC at equilibrium with a 6Li Fermi superfluid in the BEC -BCS crossover. To study its properties we excite oscillations of the center-of-mass (dipole modes). In a regime of small relative velocity we observe long lived oscillations of the two superfluids. A precise spectroscopy of these low-lying modes gives us access to equilibrium properties. When the relative velocity exceeds a critical value, we observe a strong damping of these modes in accordance with the general properties of superfluid flows. We will present recent results on the behaviour of the critical velocity and the supercritical damping in the BEC -BCS crossover.

This talk is part of the AMOP list series.

This talk is included in these lists:

• AMOP list
• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Rutherford building, Seminar Room B
• School of Physical Sciences
• Thin Film Magnetic Talks

Note that ex-directory lists are not shown.