Figure 5. Side view (a) and top view (b) of the relaxed germanene/(0001) ZnSe slab model. Yellow, gray and blue spheres are Se, Zn and Ge atoms, respectively.  

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Side view (a) and top view (b) of the relaxed germanene/(0001) ZnSe slab model. Yellow, gray and blue spheres are Se, Zn and Ge atoms, respectively.  
Three different atomic arrangements of the silicene layer on top of MoS2. Blue, yellow and green spheres are Si, S and Mo atoms, respectively.  
(a) Relaxed atomic configuration of silicene on bulk MoS2 (side view). In (b) the STM image (VB=0.2V, IS=2nA) of a partially covered MoS2 surface by Si atoms is shown (right side). A line profile...
Energy band structure and local density of states (LDOS) of the silicene/MoS2 structure. The LDOS shows that the density of states of the MoS2 substrate still preserve a gap very close to that of...
Side view (a) and top view (b) of the relaxed germanene/(0001) ZnSe slab model. Yellow, gray and blue spheres are Se, Zn and Ge atoms, respectively.  
Computed energy band structure of the germanene/(0001) ZnSe slab model, without (solid blue lines) and with (dashed red lines) an external electric field of 0.6 V/ ? in the direction perpendicular...
Computed direct (filled triangles) and indirect (filled diamonds) energy band gaps of the germanene/(0001) ZnSe slab model, as a function of the external electric field applied to the system.  
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