1D-1D coulomb drag signature of a luttinger liquid

  • Laroche D
  • Gervais G
  • Lilly M
 et al. 
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One-dimensional (1D) interacting electronic systems exhibit distinct properties when compared to their counterparts in higher dimensions. We report Coulomb drag measurements between vertically integrated quantum wires separated by a barrier only 15 nanometers wide. The temperature dependence of the drag resistance is measured in the true 1D regime where both wires have less than one 1D subband occupied. As a function of temperature, an upturn in the drag resistance is observed below a temperature T* ~ 1.6 kelvin. This crossover in Coulomb drag behavior is consistent with Tomonaga-Luttinger liquid models for the 1D-1D drag between quantum wires.

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  • D. Laroche

  • G. Gervais

  • M. P. Lilly

  • J. L. Reno

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