Collisional Stability of a Three-Component Degenerate Fermi Gas
2008; American Physical Society; Volume: 101; Issue: 20 Linguagem: Inglês
10.1103/physrevlett.101.203202
ISSN1092-0145
AutoresT. B. Ottenstein, Thomas Lompe, M. Kohnen, A. N. Wenz, Selim Jochim,
Tópico(s)Physics of Superconductivity and Magnetism
ResumoWe report on the creation of a degenerate Fermi gas consisting of a balanced mixture of atoms in three different hyperfine states of $^{6}\mathrm{Li}$. This new system consists of three distinguishable fermions with different and tunable interparticle scattering lengths ${a}_{12}$, ${a}_{13}$, and ${a}_{23}$. We are able to prepare samples containing $5\ifmmode\times\else\texttimes\fi{}{10}^{4}$ atoms in each state at a temperature of about 215 nK, which corresponds to $T/{T}_{F}\ensuremath{\approx}0.37$. We investigated the collisional stability of the gas for magnetic fields between 0 and 600 G and found a prominent loss feature at 130 G. From lifetime measurements, we determined three-body loss coefficients, which vary over nearly 3 orders of magnitude.
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