Fig. 2: Low-temperature and high-field ultrasonic properties when θ~0°.
From: Emergent anisotropy in the Fulde–Ferrell–Larkin–Ovchinnikov state
a, b Magnetic field dependence of Δv/v a and Δα b at 2.1 K. The blue and black symbols indicate the dips in Δv/v and the peaks in Δα. The black line represents offset for each dataset. c, d Enlarged plot of the datasets at 0° and 1.2°. The green area indicates the difference between the 0° and 1.2° data, which reflects the contribution of the FFLO state.
