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EnglishAn ensemble of particles in thermal equilibrium at temperature $T$, modeled by Nos`e-Hoover dynamics, moves on a triangular lattice of oriented semi-disk elastic scatterers. Despite the scatterer asymmetry a directed transport is clearly ruled out by the second law of thermodynamics. Introduction of a polarized zero mean monochromatic field creates a directed stationary flow with nontrivial dependence on temperature and field parameters. We give a theoretical estimate of directed current induced by a microwave field in an antidot superlattice in semiconductor heterostructures.
Nonequilibrium stationary states with ratchet effect / G. Cristadoro; DL. Shepelyansky. - In: PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS. - ISSN 1539-3755. - STAMPA. - 71(2005), pp. 36111-1-036111-4.
| Titolo: | Nonequilibrium stationary states with ratchet effect | |
| Autore/i: | CRISTADORO, GIAMPAOLO; D.L. Shepelyansky | |
| Autore/i Unibo: | ||
| Anno: | 2005 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevE.71.036111 | |
| Abstract: | An ensemble of particles in thermal equilibrium at temperature $T$, modeled by Nos`e-Hoover dynamics, moves on a triangular lattice of oriented semi-disk elastic scatterers. Despite the scatterer asymmetry a directed transport is clearly ruled out by the second law of thermodynamics. Introduction of a polarized zero mean monochromatic field creates a directed stationary flow with nontrivial dependence on temperature and field parameters. We give a theoretical estimate of directed current induced by a microwave field in an antidot superlattice in semiconductor heterostructures. | |
| Data prodotto definitivo in UGOV: | 2011-02-27 16:09:34 | |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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