Extended Data Fig. 3: Comparison of Raman and current maps.
From: Switching graphitic polytypes in elastically coupled cavities
(a) Representative IV curves measured on R and B regions of two different samples. Within the same sample, a bias shift of ~15 ± 5 mV is exhibited. (b) Optical image of few-layer exfoliated graphene flakes. (c) 2D Raman map of the four-layer graphene region outlined by the purple frame in (b). (d) 2D Raman peaks corresponding to R and B polytype regions. (e) Current map of the regions shown in (c). (f) Current map of the SLAP sample. (g) Line-cut along the dashed lines in (e) and (f). (h) Current map and (i) topography of a twisted double-bilayer graphene sample, showing distinct moiré patterns of different current contrast.
