Electric-field-induced band gap of bilayer graphene in ionic liquid
(Color online) (a) Schematic of experimental setup and (b) optical micrograph of typical G-FET with ionic liquid.
(Color online) Resistance as a function of (a) back- and (b) side-gate voltages in vaccum. The inset shows an expanded view of (b).
(Color online) Resistance contour plots as a function of the back- and side-gate voltage (a) in monolayer, (b) bilayer, and (c) trilayer graphene.
(Color online) Resistance of monolayer, bilayer, and trilayer graphene in ionic liquid plotted against total electric field.
(Color online) Arrhenius plots of conductance in bilayer graphene at electrical field of (a) 0 and (b) 2.5 V/nm.
(Color online) Electric field dependence of band gap in bilayer graphene. The solid curve shows the best fit to the experimental data.
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