Figure 5

Phase diagram of ⁶Li–⁴⁰K in the p − 1/k_Fa plane at T = 0 for (a) p > 0 and (b) p < 0. Stable FFLO phase lives in the narrow (yellow) shaded regions. Here “PS” labels phase separation (against unstable FFLO and Sarma superfluids), divided by the (red) dashed q = 0 line.