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SUMMARY:Universal spin transport in strongly interacting fermi gases - Pro
 f Martin Zwierlein (MIT)
DTSTART:20101022T100000Z
DTEND:20101022T110000Z
UID:TALK27645@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:We study spin transport in a two-state mixture of ultracold Fe
 rmi gases near a Feshbach resonance. The strong interactions lead to extre
 mely slow relaxation of spin currents. The relevant transport coefficients
 \, the spin conductivity and the spin diffusion coefficient\, are observed
  to attain universal minimal values\, with the spin diffusion being given 
 by hbar/m\, where m is the atomic mass.\n\nThe ratio of spin conductivity 
 and spin diffusion coefficient yields the spin susceptibility in these gas
 es\, showing the Curie law at high temperatures and a departure from the c
 ompressibility at low temperatures\, that we interpret as a signature for 
 entering the Fermi liquid regime.\n\n
LOCATION:Rutherford building\, Seminar Room B
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