As a means of realizing oscillatory pairing between fermions, we study superfluid pairing between two fermion "spin" species that are confined to adjustable spin-dependent trapping potentials. Focusing on the one-dimensional limit, we find that with increasing separation between the spin-dependent traps, the fermions exhibit distinct phases, including a fully paired phase, a spin-imbalanced phase with oscillatory pairing, and an unpaired fully spin-polarized phase. We obtain the phase diagram of fermions in such a spin-split trap and discuss signatures of these phases in cold-atom experiments. © 2011 American Physical Society.
Publication Source (Journal or Book title)
Physical Review A - Atomic, Molecular, and Optical Physics
Sun, K., Meyer, J., Sheehy, D., & Vishveshwara, S. (2011). Oscillatory pairing of fermions in spin-split traps. Physical Review A - Atomic, Molecular, and Optical Physics, 83 (3) https://doi.org/10.1103/PhysRevA.83.033608