ABSTRACT
This chapter focuses on the magnetic- and electric-field-modulated electronic and optical properties in AB-stacked bilayer silicene. For an AB-bt bilayer silicene, the buckled honeycomb lattice, the intralayer & interlayer hopping integrals, and the layer-dependent spin-orbital interactions are discussed. An AB-bt bilayer silicene presents the feature-rich electronic properties, mainly owing to its buckled hexagonal lattice, complex intralayer and inter-layer hopping integrals, and significant layer-dependent spin-orbital interactions. Apparently, there exist two pairs of conduction and valence bands. The gate-voltage-modulated electronic properties make bilayer silicene extremely useful for electronic device applications, where they require the high-resolution angle-resolved photoemission spectroscopy verifications. The optical transitions of AB-bt bilayer silicene exhibit the electric-field-enriched absorption spectra, in a great contrast to those of monolayer system. Under a vanishing electric field, three special absorption structures appear in the optical spectrum.
