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Pairing Symmetry in the Anisotropic Fermi Superfluid under p-wave Feshbach Resonance

Chi-Ho Cheng·Sung-Kit Yip
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Abstract

The anisotropic Fermi superfluid of ultra-cold Fermi atoms under the p-wave Feshbach resonance is studied theoretically. The pairing symmetry of the ground state is determined by the strength of the atom-atom magnetic dipole interaction. It is $k_z$ for a strong dipole interaction; while it becomes $k_z - i βk_y$, up to a rotation about z, for a weak one (Here $β$ < 1 is a numerical coefficient). By changing the external magnetic field or the atomic gas density, a phase transition between these two states can be driven. We discuss how the pairing symmetry of the ground state can be determined in the time-of-flight experiments.

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Chi-Ho Cheng, Sung-Kit Yip. 2006-01-20. Pairing Symmetry in the Anisotropic Fermi Superfluid under p-wave Feshbach Resonance. https://doi.org/10.1103/physrevb.73.064517

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