title: Rectification in Luttinger liquids.
abstract: We investigate the rectification of an ac bias in Luttinger liquids in the presence of an asymmetric potential (the ratchet effect). We show that a strong repulsive electron interaction enhances the ratchet current in comparison with Fermi-liquid systems, and the dc I-V curve is strongly asymmetric in the low-voltage regime even for a weak asymmetric potential. At higher voltages the ratchet current exhibits an oscillatory voltage dependence.
authors.affiliation: Department of Physics, Brown University, Providence, RI 02912, USA.
authors.forename: D E
authors.initials: DE
authors.lastname: Feldman
authors.forename: S
authors.initials: S
authors.lastname: Scheidl
authors.forename: V M
authors.initials: VM
authors.lastname: Vinokur