Pairing between atoms and molecules in a boson-fermion resonant mixture

2005/04/30 by Jian Zhang, Hui Zhai
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #cond-mat.supr-con

paper · pdf · doi:10.1103/physreva.72.041602

published as Physical Review A, 72, 041602(R) (2005) · 4 pages and 5 figures

openalex publication_date 2005/10/05 · arxiv created 2005/10/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We consider a mixture of fermionic and bosonic atoms near interspecies Feshbach resonances, which have been observed recently in ⁶Li\text\ensuremath-²³Na mixture by the MIT group and in ⁴⁰K\text\ensuremath-⁸⁷Rb mixture by the JILA group. We point out that the fermion-boson bound state, namely the heteronuclear molecules, will coexist with the fermionic atoms in a wide parameter region, and the attraction between fermionic atoms and molecules will lead to the formation of atom-molecule pairs. The pairing structure is studied in detail, and, in particular, we highlight the possible realization of the Fulde-Ferrel-Larkin-Ovchinnikov state in this system.

Citations

• Possible Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State inCeCoIn5
• Observation of resonance condensation of fermionic atom pairs
• Stability Criteria for Breached-Pair Superfluidity
• Collective Excitations of a Degenerate Gas at the BEC-BCS Crossover
• Texture in the Superconducting Order Parameter ofCeCoIn5Revealed by Nuclear Magnetic Resonance
• Observation of Bose-Einstein Condensation of Molecules
• Resonance Superfluidity in a Quantum Degenerate Fermi Gas