Momentum-resolved radio-frequency spectroscopy of ultracold atomic Fermi gases in a spin-orbit coupled lattice

Abstract

We investigate theoretically momentum-resolved radio-frequency (rf) spectroscopy of a noninteracting atomic Fermi gas in a spin-orbit coupled lattice. This lattice configuration has been recently created at MIT [Cheuk et al., arXiv:1205.3483] for 6Li atoms, by coupling the two hyperfine spin-states with a pair of Raman laser beams and additional rf coupling. Here, we show that momentum-resolved rf spectroscopy can measure single-particle energies and eigenstates and therefore resolve the band structure of the spin-orbit coupled lattice. In our calculations, we take into account the effects of temperatures and harmonic traps. Our predictions are to be confronted with future experiments on spin-orbit coupled Fermi gases of 40K atoms in a lattice potential.

9 pages, 8 figures

References in corpus (5)

• Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
• Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
• Spin-Orbit Coupled Spinor Bose-Einstein Condensates
• Using photoemission spectroscopy to probe a strongly interacting Fermi gas
• Determination of the Fermion Pair Size in a Resonantly Interacting Superfluid

Cited by in corpus (2)

• Momentum-resolved radio-frequency spectroscopy of a spin-orbit coupled atomic Fermi gas near a Feshbach resonance in harmonic traps
• Validity of single-channel model for a spin-orbit coupled atomic Fermi gas near Feshbach resonances