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. 2014 Nov 18;4:7086. doi: 10.1038/srep07086

Figure 2. The 2D WAL effect in Bi nanoribbons.

Figure 2

(a) and (c) respectively show the angle- dependent MR of nanoribbons S1 (d = 40 nm) and S2 (d = 80 nm) measured at 2 K. The solid curve in (a) is a parabolic fit to the MR data measured at θ = 90°; Inset: schematic of the measurement setup where θ denotes the angle between the direction of the magnetic field and the current flow in the nanoribbons. (b) and (d) respectively show the magnetoconductance as a function of the perpendicular component B⊥ = Bcosθ by subtracting the magnetoconductance at θ = 90° for S1 and S2. The solid lines (red) are fits of 2D localization theory. All the traces were normalized to a single curve in low field range, indicating the 2D surface nature of the magnetoconductance.