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Thursday, June 21, 2012
10:00 AM - 11:00 AM
CNLS Conference Room (TA-3, Bldg 1690)

Seminar

Spin and energy transport in cold atomic Fermi gases

David Huse
Princeton University

I will consider spin and energy transport in a spin-polarized unitary Fermi gas. First, I will discuss the case of low temperature where there is phase separation within the atomic cloud between paired superfluid and normal phases. The interface between these phases is a barrier to transport, and this can cause the system to go far out of equilibrium under evaporative cooling. Second, I will discuss the transport in various regimes of the normal phase, focusing on how the diffusivities scale with temperature, polarization and detuning from unitarity. Time permitting, I will also discuss the "magnetocaloric" effects, such as the spin Seebeck effect where a temperature gradient drives a spin current.

Host: Armin Rahmanisisan, T-4 and CNLS, armin@lanl.gov (505) 667-1646