### Session A16: Quantum Fermi Gases and Feshbach Resonances

8:00 AM–11:00 AM, Monday, March 16, 2009
Room: 317

Chair: Martin Zwierlein, Massachusetts Institute of Technology

Abstract ID: BAPS.2009.MAR.A16.13

### Abstract: A16.00013 : Matterwave Probe for Detecting Fermi Superfluidity

10:24 AM–10:36 AM

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#### Authors:

Satyan Bhongale
(Rice University)

Han Pu
(Rice University)

We propose a matter wave probe for detecting BCS type superfluidity within a trapped two-component Fermi gas. While, previous theoretical/experimental attempts have addressed Fermi superfluidity via a global measurement, for example by demonstrating a vortex lattice, the current proposal allows for a local measurement of the pairing gap. For this, we study the phase diagram of a mixture of Bose-Einstein condensate and an interacting two-component Fermi gas. We identify regions of the parameter space where the Bose-Fermi mixture is unstable resulting in phase separation. We show that, under proper conditions, by employing a tunable scattering resonance, the phase separation phenomenon can be exploited as a robust probe of local'' fermion superfluidity.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2009.MAR.A16.13