Fig. 5: Relationship between polar vortex and lattice rotation.
From: Polar vortex hidden in twisted bilayers of paraelectric SrTiO3

a, c Experimental (a) and phase-field modeling results (c) of lattice rotation and polarization in two depths with CW and CCW vortex arrays. b, d Profiles of the vorticity and lattice rotation across the lines marked in (a) and (c). Positive values mean counterclockwise lattice rotation. Scale bars, 2 nm.