2001/05/15 by P. Debray, V. N. Zverev, Debray, P. +9
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Cold Atom Physics and Bose-Einstein Condensates
paper · pdf · doi:10.48550/arxiv.cond-mat/0105298
The Coulomb drag between two spatially separated, 2 μm long lithographically defined quantum wires has been studied experimentally in the absence of interwire tunneling. The drag resistance RD shows peaks when the 1D subband bottoms of the wires are aligned and the Fermi wave vector kF is small. RD decreases exponentially with the interwire separation d. In the temperature range 0.2K to 1K the drag signal shows the \it power-law dependence RD ~ T**x with x ranging from -0.61 to -0.77 depending on the magnitude of kF. We interpret our experimental results in the framework of the Tomonaga-Luttinger liquid theory.