Floquet engineering provides a toolbox for the realization of novel quantum phases without static counterparts, while conventionally may rely on manipulation complex temporal evolution. Here we propose systematic and high-precision scheme to realize unconventional topological by local band structures in particular momentum subspace called inversion surfaces (BISs). This is based new bulk-bounda...

Article history: Available online 3 May 2009 Communicated by Thomas Strohmer on 22 July 2008

Searching for the two-dimensional (2D) topological insulators (TIs) with large bulk band gaps is the key to achieve room-temperature quantum spin Hall effect (QSHE). Using first-principles calculations, we demonstrated that the recently-proposed antimonene [Zhang et al., Angew. Chem. Int. Ed. 54, 3112-3115 (2015)] can be tuned to a 2D TI by reducing the buckling height of the lattice which can ...

It has been previously demonstrated that it is possible to form the NOT gate in a coupled semiconductor waveguide structure in III–V materials. However, to this point, investigations have assumed the materials to be perfect. In this article, we present results of a semiconductor waveguide inverter in GaAs and InAs with disordered material effects included in the simulation. The behavior of the ...

Spintronics is an emerging paradigm with the aim to replace conventional electronics by using electron spins as information carriers. Its utility relies on the magnitude of the spin-relaxation, which is dominated by spin-orbit coupling (SOC). Yet, SOC induced spin-relaxation in metals and semiconductors is discussed for the seemingly orthogonal cases when inversion symmetry is retained or broke...

We have developed an eight-band finite-difference envelope function approximation model capable of reproducing in almost all situations the true D2d or C2v symmetry of [001] grown zinc-blende heterostructures. We have used our model to study the relative contributions of the bulk inversion asymmetry (BIA) and structural inversion asymmetry to the spin splitting in the conduction band of asymmet...