Microscale phase separation in fermionic systems with exotic superfluidity

Details Microscale phase separation in fermionic systems with exotic superfluidity Microscale phase separation in fermionic systems with exotic superfluidity

2011-03-15

arxiv.org/abs/1103.2951v2

Physics

Condensed Matter

Superconductivity

5 pages, 5 figures

Scientific paper

We show that the ground-state of one-dimensional superfluids with spin-imbalanced populations is indeed microscale phase separated, as predicted almost fifty years ago by Fulde-Ferrell and Larkin-Ovchinnikov (FFLO). For strongly interacting systems, we find that the microscale structure can be observed directly in the density profiles. We also deduce an analytical upper bound for the critical polarization below which the FFLO-state takes place. The phase diagram depicted here indicates the parameters for which exotic superfluidity can be theoretically and experimentally explored.

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