We present majority and minority radio frequency spectra of strongly interacting imbalanced Fermi gases of 6Li. We observed a smooth evolution in the nature of pairing correlations from pairing in the superfluid region to polaron binding in the highly polarized normal region. The imbalance induces quasiparticles in the superfluid region even at very low temperature. This leads to a local bimodal spectral response, which allowed us to determine the superfluid gap Delta and the Hartree energy U.

Schirotzek, A., Shin, Y.I., Schunck, C., & Ketterle, W. (2008). Determination of the superfluid gap in atomic fermi gases by quasiparticle spectroscopy. PHYSICAL REVIEW LETTERS, 101(14), 140403 [10.1103/PhysRevLett.101.140403].

Determination of the superfluid gap in atomic fermi gases by quasiparticle spectroscopy

SCHUNCK, CHRISTIAN;
2008

Abstract

We present majority and minority radio frequency spectra of strongly interacting imbalanced Fermi gases of 6Li. We observed a smooth evolution in the nature of pairing correlations from pairing in the superfluid region to polaron binding in the highly polarized normal region. The imbalance induces quasiparticles in the superfluid region even at very low temperature. This leads to a local bimodal spectral response, which allowed us to determine the superfluid gap Delta and the Hartree energy U.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01 - Fisica Sperimentale
English
Schirotzek, A., Shin, Y.I., Schunck, C., & Ketterle, W. (2008). Determination of the superfluid gap in atomic fermi gases by quasiparticle spectroscopy. PHYSICAL REVIEW LETTERS, 101(14), 140403 [10.1103/PhysRevLett.101.140403].
Schirotzek, A; Shin, Yi; Schunck, C; Ketterle, W
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/189663
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