Fig. 2: IP polarization in t-BN.
From: Edge polarization topology integrated with sliding ferroelectricity in Moiré system
A Schematic of PFM measurements. B Principle of lateral PFM. C Topography of t-BN. D L-Amp. and E L-Pha. of moiré domains at a tip-sample angle of 0°. F L-Amp. and G L-pha. signals measured at the same position with a tip-sample angle of 60°. H L-Amp. and I L-pha. responses obtained at a tip-sample angle of −60°.The gray tip represents the direction of the cantilever beam, and the red and blue dashed arrows in the phase image indicate the direction of IP polarization. J Polar plot of L-Amp. magnitude extracted from L-amp. images obtained at different tip-sample angles (from 0° to 360° with a step of 30°). K The profiles of L-Amp. and L-Pha. along the red dashed line in (D) and the same position in (E).
