We theoretically investigate the thermopower of silicene systems in an external electric field perpendicular to the silicene sheet. In the absence of the field, we estimate that the thermopower of pure silicene is of order ∼80 μV/K. When a finite field is applied, a comparatively big band gap...

We theoretically investigate electron tunneling through a dual-gated graphene heterostructure, in which a thin barrier layer is sandwiched between two graphene layers. We show that the perfect tunneling of electrons presented in a single layer of graphene (also known as Klein tunneling) could be...