Fermionic Superfluidity with Imbalanced Spin Populations
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- 27 January 2006
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 311 (5760) , 492-496
- https://doi.org/10.1126/science.1122318
Abstract
We established superfluidity in a two-state mixture of ultracold fermionic atoms with imbalanced state populations. This study relates to the long-standing debate about the nature of the superfluid state in Fermi systems. Indicators for superfluidity were condensates of fermion pairs and vortices in rotating clouds. For strong interactions, near a Feshbach resonance, superfluidity was observed for a broad range of population imbalances. We mapped out the superfluid regime as a function of interaction strength and population imbalance and characterized the quantum phase transition to the normal state, known as the Pauli limit of superfluidity.Keywords
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