Session C1: Poster Session I: 2:00 pm - 5:00 pm
2:00 PM–2:00 PM, Monday, March 10, 2008
Morial Convention Center Room: Exhibit Hall A
Sponsoring Unit:
APS
Abstract ID: BAPS.2008.MAR.C1.305
Abstract: C1.00305 : Experimental Evidence of Fermi-Luttinger Liquid State.
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Abstract 
Authors:
Philippe Debray
(University of Cincinnati, Cincinnati, OH 45221)
Mustafa Muhammad
(University of Cincinnati, Cincinnati, OH 45221)
Steven Herbert
(Xavier University, Cincinnati, OH 45207)
Richard Newrock
(University of Cincinnati, Cincinnati, OH 45221)
We have measured Coulomb drag between spatially separated parallel quantum wires, made on AlGaAs/GaAs heterostructures by the split-gate technique, in the absence of tunneling to experimentally probe drag by small forward momentum transfer. Drag between wires of lengths 500 and 300 nm was measured in the one-dimensional transport regime at temperatures in the range 30 mK -- 1.2 K. We have observed both positive and negative drag. The temperature dependence of drag of both types is in excellent agreement with that predicted by the recently proposed Fermi-Luttinger liquid (FLL) theory that takes into account the curvature in the fermionic dispersion. Positive drag occurs when the curvature is positive, while negative drag occurs when it is negative.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.MAR.C1.305