title: Nonlinear Wigner solid transport on the free surface of normal and superfluid 3He.
abstract: We present measurements and a theoretical concept of the nonlinear transport in the two-dimensional Wigner solid on the free surface of normal and superfluid 3He. We have observed the transition from Ohmic to nonlinear transport over a wide temperature range, from 200 microK to 200 mK at low electron velocities. The field-velocity (E-nu) characteristics show a nonmonotonic structure with a particular local maxima. We attribute this nonlinearity to the velocity-induced deformation of the periodic surface displacement due to the extremely strong damping in Fermi-liquid 3He. The calculated E-nu curves and thresholds are in good agreement with experiment.
authors.affiliation: Department of Physics, Keio University, Yokohama 223-8522, Japan.
authors.forename: Keiya
authors.initials: K
authors.lastname: Shirahama
authors.forename: Yuri P
authors.initials: YP
authors.lastname: Monarkha
authors.forename: Kimitoshi
authors.initials: K
authors.lastname: Kono