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We develop a theoretic description of the photogalvanic current induced by a high frequency radiation in asymmetric nanostructures and show that it describes well the results of numerical simulations. Our studies allow to understand the origin of the electronic ratchet transport in such systems and show that they can be used for creation of new types of(More)
: The existence of moving indirect excitons in monolayer graphene is theoretically evidenced in the envelope-function approximation. The excitons are formed from electrons and holes near the opposite conic points. The electron-hole binding is conditioned by the trigonal warping of the electron spectrum. It is stated that the exciton exists in some sectors(More)
  • M Entin
  • 1981
Reconstruction of partial digital aplasia with one border digit is attainable in young patients. It requires construction or transplantation of a stable part with functional sensibility to permit pinch and grasp. Toe transplants provide these functions relatively rapidly but carry a certain risk of failure and add a new deformity to the foot. The(More)
We study analytically and numerically the ratchet transport of interacting particles induced by a monochromatic driving in asymmetric two-dimensional structures. The ratchet flow is preserved in the limit of strong interactions and can become even stronger compared to the noninteracting case. The developed kinetic theory gives a good description of these(More)
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