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We calculated the conductance of silicene pn junction in the bipolar region using the non-equilibrium retarded Green's function method. When an electrical field is applied normally, the energy gaps of valleys K and K′ become different. The conductance of pn junctions is mainly determined by the transport of electrons of the valley with the smaller gap, and the conductance of the other valley can also...
In virtue of techniques derived from nonlinear control system theory, we establish conditions under which one could obtain anticipating synchronization between two periodically driven deterministic ratchets that are able to exhibit directed transport with a finite velocity. Criteria are established in order to guarantee the anticipating synchronization property of such systems as well as characterize...
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