Fig. 3: Correlated insulator behaviors in BLG/CrOCl hetero-system.
From: Unconventional correlated insulator in CrOCl-interfaced Bernal bilayer graphene
a Schematic picture of in-plane electric field applied to the BLG/CrOCl heterostructure. Vbias and \({\overrightarrow{E}}_{\parallel }\) denote the bias voltage between source and drain, and the in-plane electrical field, respectively. b Dual-gate maps of longitudinal channel resistance Rxx at different in-plane electric field \({\overrightarrow{E}}_{\parallel }\) of 20, 40, 60, 80, and 100 kV/m, in increasing order from bottom to top, respectively. c The lower edges of the insulating phase extracted from b in the ntot-Deff space. d I–V curves for Points 1–5 indicated in c, with traces and retraces recorded. Data in b–d were obtained at 1.5 K. e Zero-bias differential conductance as a function of temperature measured in the colored points indicated in the inset, which is the same data as the top map in b, i. e., Rxx measured at \({\overrightarrow{E}}_{\parallel }\) = 100 kV/m, plotted in ntot-Deff space.
