Silicene spintronics — A concise review*
Wang Yang-Yanga),c), Quhe Ru-Gea),d),e),f), Yu Da-Penga),b), Lü Jing‡a),b)
       
Tunable high-efficiency spin-filter. (a) Geometry of the spin-filter and the profile of the potential barrier U ( x i ). The two colors of atoms on the lattice emphasize the buckled structure. (b) Spin-polarization of the filter as a function of μ 0 in the constriction. The blue (green) line corresponds to the case of applying a potential barrier with a rectangular (smooth) shape. Panels (c) and (d) are typical dispersion relations for the wide and the constriction regions, respectively. Reproduced with permission from Ref. [ 39 ]. Copyright 2013 Macmillan Publishers Limited.