Temperature dependence of Coulomb drag between finite-length quantum wires
arXiv:0704.0515 · doi:10.1103/PhysRevLett.99.086404
Abstract
We evaluate the Coulomb drag current in two finite-length Tomonaga-Luttinger-liquid wires coupled by an electrostatic backscattering interaction. The drag current in one wire shows oscillations as a function of the bias voltage applied to the other wire, reflecting interferences of the plasmon standing waves in the interacting wires. In agreement with this picture, the amplitude of the current oscillations is reduced with increasing temperature. This is a clear signature of non-Fermi-liquid physics because for coupled Fermi liquids the drag resistance is always expected to increase as the temperature is raised.
5 pages, 5 figures; v2: accepted version at PRL
References in corpus (5)
- Coulomb drag by small momentum transfer between quantum wires
- Transport properties of single channel quantum wires with an impurity: Influence of finite length and temperature on average current and noise
- Influence of the contacts on the conductance of interacting quantum wires
- Conductance oscillations in strongly correlated fractional quantum Hall line junctions
- Generation of spin current by Coulomb drag