Production of long-lived ultracold Li2 molecules from a Fermi gas

Production of long-lived ultracold Li2 molecules from a Fermi gas

We create weakly bound Li2 molecules from a degenerate two component Fermi gas by sweeping a magnetic field across a Feshbach resonance. The atom-molecule transfer efficiency can reach 85% and is studied as a function of magnetic field and initial temperature. The bosonic molecules remain trapped fo...

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Veröffentlicht in:Physical review letters 2003-12, Vol.91 (24), p.240401-240401
Hauptverfasser: Cubizolles, J, Bourdel, T, Kokkelmans, S J J M F, Shlyapnikov, G V, Salomon, C
Format: Artikel
Sprache:eng
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Zusammenfassung:We create weakly bound Li2 molecules from a degenerate two component Fermi gas by sweeping a magnetic field across a Feshbach resonance. The atom-molecule transfer efficiency can reach 85% and is studied as a function of magnetic field and initial temperature. The bosonic molecules remain trapped for 0.5 s and their temperature is within a factor of 2 from the Bose-Einstein condensation temperature. A thermodynamical model reproduces qualitatively the experimental findings.
ISSN:0031-9007