Figure 3: Gapless contour and quasi-particle dispersion of the nFF state.
From: Topological Fulde–Ferrell–Larkin–Ovchinnikov states in spin–orbit-coupled Fermi gases
(a) Evolution of gapless contours in the momentum space for the nFF states with αkh/h=0.49, and μ/h=1.002 (magenta), 1.05 (blue) and 1.15 (black). (b–d) Dispersion spectra of quasi-particle and quasi-hole along the kx axis with (b) αkh/h=0.49, μ/h=1.05; (c) αkh/h=0.49, μ/h=1.002; and (d) αkh/h=0.8, μ/h=0.87. It is apparent from (c–d) that at the topological phase boundaries, two gapless points exist between the nFF and the tFF states, whereas a single gapless point exists between the gFF and the tFF states. Other parameters used in these plots are Eb/h=0.5 and hx/h=0.1.
