What is evidences for itinerant ferromagnetism?

We  have observed three predictions of mean-field model: the onset of local magnetization through the suppression of inelastic collisions, (ii) the minimum in kinetic energy, and (iii) the maximum in
the size of the cloud. These qualitative features are generic for the ferromagnetic phase transition  and should also be present in more-advanced  models

Atom loss rate as a probe for local spin polarization

Kinetic energy of a repulsively interacting Fermi gas

                                                     Maximum in volume at the phase transition

 

 

 

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