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Observation of Phase Separation in a Strongly Interacting Imbalanced Fermi Gas

Observation of Phase Separation in a Strongly Interacting Imbalanced Fermi Gas

We have observed phase separation between the superfluid and the normal component in a strongly interacting Fermi gas with imbalanced spin populations. The in situ distribution of the density difference between two trapped spin components is obtained using phase-contrast imaging and 3D image reconstruction. A shell structure is clearly identified …