Figure 4
From: Dual evidence of surface Dirac states in thin cylindrical topological insulator Bi2Te3 nanowires

Panel (a) shows the variations, ΔR, of the resistance vs. H// measured at different T after subtraction of a background by fitting the original data with a polynomial function (the fitted background curves were shown in Fig. S3).
The significant minima indicated by the solid lines are located nicely at integer multiples of flux quanta Φ0 = h/e. Tiny dips superimposed on the most of the broad peaks were seen and located approximately at the odd multiples of Φ0/2 within an uncertainty of 10%. Bottom panel (b) shows the variations, ΔR, of the resistance vs. H⊥ after subtraction of a background measured at different T. The oscillation spectra do not show simple periodic behavior with H⊥. At 0.2 K, some additional fine structures, such as tiny peaks or kinks, appear.