A theoretical study of the nonlinear transport in the two-dimensional Wigner solid on the free surface of normal and superfluid 3 He was carried out. The transition from ohmic to nonlinear transport over a wide temperature range was observed from 200 μK to 200 mK at low electron velocities. The field-velocity (E-v) characteristics showed a nonmonotonic structure with a particular local maxima. It was found that the nonlinear E-v characteristics were due to the shape transformation of the surface dimples, which is caused by the strong damping effect inherent in the Fermi liquid at low temperatures.
ASJC Scopus subject areas
- Physics and Astronomy(all)