Collisional Stability of a Three-Component Degenerate Fermi Gas

2008/06/30 by T. B. Ottenstein, T. Lompe, Thomas Lompe +4 · 5 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #cond-mat.other

paper · pdf · doi:10.1103/physrevlett.101.203202

published as PRL 101, 203202 (2008)

openalex publication_date 2008/11/14 · arxiv created 2008/11/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We report on the creation of a degenerate Fermi gas consisting of a balanced mixture of atoms in three different hyperfine states of 6Li. This new system consists of three distinguishable fermions with different and tunable interparticle scattering lengths a₁₂, a₁₃, and a₂₃. We are able to prepare samples containing 5x10;4 atoms in each state at a temperature of about 215 nK, which corresponds to T/T_F approximately 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.

Citations

• Three-Body Recombination at Large Scattering Lengths in an Ultracold Atomic Gas
• Observation of resonance condensation of fermionic atom pairs
• BCS pairing in Fermi systems withNdifferent hyperfine states
• Observation of Bose-Einstein Condensation of Molecules

Cited by

• Functional renormalization for trion formation in ultracold fermion gases
• Weakly bound cluster states of Efimov character
• Ultracold three-body collisions near narrow Feshbach resonances
• Loss-induced phase separation and pairing for three-species atomic lattice fermions
• Feshbach resonances in ultracold gases