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.

Zwierlein, M.W., Schirotzek, A., Schunck, C., & Ketterle, W. (2006). Fermionic superfluidity with imbalanced spin populations. SCIENCE, 311(5760), 492-496 [10.1126/science.1122318].

Fermionic superfluidity with imbalanced spin populations

SCHUNCK, CHRISTIAN;
2006

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.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01 - Fisica Sperimentale
English
Zwierlein, M.W., Schirotzek, A., Schunck, C., & Ketterle, W. (2006). Fermionic superfluidity with imbalanced spin populations. SCIENCE, 311(5760), 492-496 [10.1126/science.1122318].
Zwierlein, M; Schirotzek, A; Schunck, C; Ketterle, W
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/189685
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