Decay of an Ultracold Fermionic Lithium Gas near a Feshbach Resonance

K. Dieckmann; C. A. Stan; S. Gupta; Z. Hadzibabic; C. H. Schunck; W. Ketterle

doi:10.1103/PhysRevLett.89.203201

Decay of an Ultracold Fermionic Lithium Gas near a Feshbach Resonance

K. Dieckmann, C. A. Stan, S. Gupta, Z. Hadzibabic, C. H. Schunck, W. Ketterle

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139 Scopus citations

Abstract

We studied the magnetic field dependence of the inelastic decay of an ultracold, optically trapped fermionic [Formula presented] gas of different spin compositions. The spin mixture of the two lowest hyperfine states showed two decay resonances at 550 and 680 G, consistent with the predicted Feshbach resonances for elastic [Formula presented]-wave collisions. The observed lifetimes of several hundred ms are much longer than the expected time for Cooper pair formation and the phase transition to superfluidity in the vicinity of the Feshbach resonance.

Original language	English (US)
Journal	Physical review letters
Volume	89
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.89.203201
State	Published - 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.89.203201

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abstract = "We studied the magnetic field dependence of the inelastic decay of an ultracold, optically trapped fermionic [Formula presented] gas of different spin compositions. The spin mixture of the two lowest hyperfine states showed two decay resonances at 550 and 680 G, consistent with the predicted Feshbach resonances for elastic [Formula presented]-wave collisions. The observed lifetimes of several hundred ms are much longer than the expected time for Cooper pair formation and the phase transition to superfluidity in the vicinity of the Feshbach resonance.",

author = "K. Dieckmann and Stan, {C. A.} and S. Gupta and Z. Hadzibabic and Schunck, {C. H.} and W. Ketterle",

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language = "English (US)",

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T1 - Decay of an Ultracold Fermionic Lithium Gas near a Feshbach Resonance

AU - Dieckmann, K.

AU - Stan, C. A.

AU - Gupta, S.

AU - Hadzibabic, Z.

AU - Schunck, C. H.

AU - Ketterle, W.

PY - 2002

Y1 - 2002

N2 - We studied the magnetic field dependence of the inelastic decay of an ultracold, optically trapped fermionic [Formula presented] gas of different spin compositions. The spin mixture of the two lowest hyperfine states showed two decay resonances at 550 and 680 G, consistent with the predicted Feshbach resonances for elastic [Formula presented]-wave collisions. The observed lifetimes of several hundred ms are much longer than the expected time for Cooper pair formation and the phase transition to superfluidity in the vicinity of the Feshbach resonance.

AB - We studied the magnetic field dependence of the inelastic decay of an ultracold, optically trapped fermionic [Formula presented] gas of different spin compositions. The spin mixture of the two lowest hyperfine states showed two decay resonances at 550 and 680 G, consistent with the predicted Feshbach resonances for elastic [Formula presented]-wave collisions. The observed lifetimes of several hundred ms are much longer than the expected time for Cooper pair formation and the phase transition to superfluidity in the vicinity of the Feshbach resonance.

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DO - 10.1103/PhysRevLett.89.203201

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VL - 89

JO - Physical Review Letters

JF - Physical Review Letters

IS - 20

ER -

Decay of an Ultracold Fermionic Lithium Gas near a Feshbach Resonance

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