Fig. 2: Gate-specific anomalous screening and scan-dependent hysteresis.
From: Electronic ferroelectricity in monolayer graphene moiré superlattices
Dual-gate maps of \({R}_{{xx}}\) by scanning \({V}_{\text{t}}\) forward (a) and backward (b) at each fixed \({V}_{\text{b}}\). c The difference between \({R}_{{xx}}\) in (a) and (b). d The corresponding \({n}_{\text{total}}-D\) plot of (c). Dual-gate maps of \({R}_{{xx}}\) by scanning \({V}_{\text{b}}\) forward (e) and backward (f) at each fixed \({V}_{\text{t}}\). g The difference between \({R}_{{xx}}\) in (e) and (f). h The corresponding \({n}_{\text{total}}-D\) plot of (g). In (a–c, e–g), the fast-scan axis and slow-scan axis are plotted in horizontal axis and vertical axis, respectively. The solid arrows illustrate the fast-scan direction, and the dashed arrows mark the slow-scan direction.
