Fig. 3: Evolution of the zero Hall conductance plateau in magnetic TI sandwiches by varying m. | Nature Communications

Fig. 3: Evolution of the zero Hall conductance plateau in magnetic TI sandwiches by varying m.

From: Axion insulator state in hundred-nanometer-thick magnetic topological insulator sandwich heterostructures

Fig. 3

a μ0H dependence of σxx and σxy of the magnetic TI sandwiches with m = 100, m = 75, m = 30, and m = 12, respectively. b–f μ0H dependence of σxx (red) and σxy (blue) of the magnetic TI sandwiches with m = 8 (b), m = 3 (c), m = 2 (d), m = 1.5 (e), and m = 1 (f), respectively. g Flow diagrams of (σxy, σxx) of the m = 100, m = 75, m = 30, and m = 12 samples. h–l Flow diagram of (σxy, σxx) of the m = 8 (h), m = 3 (i), m = 2 (j), m = 1.5 (k), and m = 1 (l) samples. Two semicircles of radius e2/2h centered at (e2/2h, 0) and (-e2/2h, 0) and one semicircle of radius e2/h centered at (0, 0) are shown in dashed lines. All measurements are taken at Vg = Vg0 and T = 70 mK.

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