Fig. 2: Majorana Zero Modes (MZMs) in the structure. | Communications Physics

Fig. 2: Majorana Zero Modes (MZMs) in the structure.

From: Conductance spectroscopy of Majorana zero modes in superconductor-magnetic insulator nanowire hybrid systems

Fig. 2

a, b Density of states (DOS) as a function of the energy(E) and the externally applied Zeeman field \({V}_{Z}^{ext}\) of the device region for nanowire (NW) lengths a 2.25 μm, and b 4.5 μm. The low energy DOS shows the gap closing, followed by the emergence of a state near zero energy. The splitting of this low energy state is greater for shorter nanowires than longer nanowires. c, d Local density of states (LDOS) profiles at \({V}_{Z}^{ext}=0.1{\Delta }_{0}\) which clearly show the localization of the zero energy states at the ends of the nanowire, consistent with the appearance of MZMs. The longer (length 4.5 μm) nanowire d shows a greater degree of localization than the shorter (length 2.25 μm) nanowire c. The bare superconducting gap in the parent superconductor Δ0 sets the scale for all energies. The colorbars represent the magnitude of the DOS, LDOS.

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