Symmetry breaking for ratchet transport in presence of interactions and magnetic field
arXiv:1211.4411 · doi:10.1103/PhysRevE.87.022912
Abstract
We study the microwave induced ratchet transport of two-dimensional electrons on an oriented semidisk Galton board. The magnetic field symmetries of ratchet transport are analyzed in presence of electron-electron interactions. Our results show that a magnetic field asymmetric ratchet current can appear due to two contributions, a Hall drift of the rectified current that depends only weakly on electron-electron interactions and a breaking of the time reversal symmetry due to the combined effects of interactions and magnetic field. In the latter case, the asymmetry between positive and negative magnetic fields vanishes in the weak interaction limit. We also discuss the recent experimental results on ratchet transport in asymmetric nanostructures.
arXiv comment5 pages, 4 figures
References in corpus (15)
- Brownian motors: noisy transport far from equilibrium
- Artificial Brownian motors: Controlling transport on the nanoscale
- Magnetic-field asymmetry of nonlinear mesoscopic transport
- Signature of the electron-electron interaction in the magnetic field dependence of nonlinear I-V characteristics in mesoscopic systems
- Experimental investigation of the ratchet effect in a two-dimensional electron system with broken spatial inversion symmetry
- Mesoscopic fluctuations of nonlinear conductance of chaotic quantum dots
- Photogalvanic current in artificial asymmetric nanostructures
- Ratchet transport of interacting particles
- Directing transport by polarized radiation in presence of chaos and dissipation
- Photocurrent in nanostructures with asymmetric antidots
- Directed transport born from chaos in asymmetric antidot structures
- Relativistic graphene ratchet on semidisk Galton board
- Nonequilibrium stationary states with ratchet effect
- Hall detection of time-reversal symmetry breaking under AC electric driv ing
- Mesoscopic magnetoelectric effect in chaotic quantum dots