Pumping in an interacting quantum wire

R. Citro, N. Andrei, Q. Niu
2003 Physical Review B (Condensed Matter)  
We study charge and spin pumping in an interacting one-dimensional wire. We show that a spatially periodic potential modulated in space and time acts as a quantum pump inducing a dc-current component at zero bias. The current generated by the pump is strongly affected by the interactions. It has a power law dependence on the frequency or temperature with the exponent determined by the interaction in the wire, while the coupling to the pump affects the amplitudes only. We also show that pure
more » ... -pumping can be achieved, without the presence of a magnetic field.
doi:10.1103/physrevb.68.165312 fatcat:texqv54j4jhnvck3m5qjw6naca