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Abstract: We evaluate the Coulomb drag current in two finite-lengthTomonaga-Luttinger-liquid wires coupled by an electrostatic backscatteringinteraction. The drag current in one wire shows oscillations as a function ofthe bias voltage applied to the other wire, reflecting interferences of theplasmon standing waves in the interacting wires. In agreement with thispicture, the amplitude of the current oscillations is reduced with increasingtemperature. This is a clear signature of non-Fermi-liquid physics because forcoupled Fermi liquids the drag resistance is always expected to increase as thetemperature is raised.



Autor: J. Peguiron, C. Bruder, B. Trauzettel

Fuente: https://arxiv.org/







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