Fig. 4

a Effective potential normal to the transport direction. The coordinate corresponds to the location of atoms and is defined in Fig. 1. The dark regions correspond to the vdW gap. b Plane-averaged electron distribution normal to the transport direction. The right panel is the doping level. The coordinate corresponds to the location of atoms and is defined in Fig. 1. c DOS of InSe. The green corresponds to pristine InSe. d Current dependent bias of the two probe devices. All of the red and blue correspond to top and sandwiched contacts, respectively