Figure 3: Giant quantum Hall plateaus.
From: Giant quantum Hall plateaus generated by charge transfer in epitaxial graphene
Pulsed magnetic field measurements of the quantum Hall effect in epitaxial graphene on SiC at T = 2 K as observed in the longitudinal resistance (Rxx, red) and Hall resistance (Rxy, black) showing an exceptionally wide (~50 T) ν = 2 plateau. Upper inset: The end of the plateau at B > 50 T. Lower inset: Rxx at low magnetic fields showing clear Shubnikov-de Haas oscillations and weak localisation. (b) Examples of high speed I − Vxx traces taken during a single pulsed magnetic field measurement, showing that clear quantum Hall breakdown behaviour is observed. (c) Magnetic field dependence of the breakdown current (purple triangles) for the ν = 2 plateau and a best fit (solid line) using equations (1) and (6) with the power p = 13. The red line shows the longitudinal resistivity and the inset shows the corresponding magnetic field dependent carrier density.
