Nonequilibrium stationary states with ratchet effect

Abstract

An ensemble of particles in thermal equilibrium at temperature $T$, modeled by Nosè-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.

4 pages, 5 figures (small changes added)

References in corpus (4)

• Brownian motors: noisy transport far from equilibrium
• Ratchet-like dynamics of fluxons in annular Josephson junctions driven by bi-harmonic microwave fields
• Quantum ratchet effect for vortices
• The Nose-hoover thermostated Lorentz gas

Cited by in corpus (10)

• Tunable transport with broken space-time symmetries
• Experimental investigation of the ratchet effect in a two-dimensional electron system with broken spatial inversion symmetry
• Photogalvanic current in artificial asymmetric nanostructures
• Properties of 1D two-barrier quantum pump with harmonically oscillating barriers
• Ratchet transport of interacting particles
• Photocurrent in nanostructures with asymmetric antidots
• Directed transport born from chaos in asymmetric antidot structures
• Theory of one-dimensional double-barrier quantum pump in two-frequency signal regime
• Magnetization of ballistic quantum dots induced by a linear-polarized microwave field
• Symmetry breaking for ratchet transport in presence of interactions and magnetic field