Fig. 3: Experimental mini-gate control in an SJ.
From: Fusion of Majorana bound states with mini-gate control in two-dimensional systems

a, b Scanning electron microscope (SEM) image of an InAs/Al SJ with five mini gates covering the normal region. Mini gates can be controlled independently and those overlaid in red indicate the regions in which the applied bias current, IB can flow. The 2DEG is depleted under the other gates. c, d Differential resistance of the device as a function of the IB and out-of-plane B⊥, corresponding to the gate configuration presented in a, b, respectively.