Title: Dynamic transport in a quantum wire driven by spin-orbit interaction,
Abstract: We consider a gated one-dimensional (1D) quantum wire disturbed in a
contactless manner by an alternating electric field produced by a tip of a
scanning probe microscope. In this schematic 1D electrons are driven not by a
pulling electric field but rather by a non-stationary spin-orbit interaction
(SOI) created by the tip. We show that a charge current appears in the wire in
the presence of the Rashba SOI produced by the gate net charge and image
charges of 1D electrons induced on the gate (iSOI). The iSOI contributes to the
charge susceptibility by breaking the spin-charge separation between the
charge- and spin collective excitations, generated by the probe. The velocity
of the excitations is strongly renormalized by SOI, which opens a way to
fine-tune the charge and spin response of 1D electrons by changing the gate
potential. One of the modes softens upon increasing the gate potential to
enhance the current response as well as the power dissipated in the system.