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Published on: August 2, 2019
The electron-hole superfluidity in two coaxial nanotubes
Oleg L Berman1, Ilya Grigorenko, Roman Ya Kezerashvili
1Physics Department, New York City College of Technology, The City University of New York, Brooklyn, NY 11201, USA.
Abstract:
The superfluid phase and Coulomb drag effect caused by the pairing in a system of spatially separated electrons and holes in two coaxial cylindrical nanotubes are predicted. It is found that the drag resistance as a function of temperature experiences a jump at the critical temperature and can be used for the manifestation of the superfluid transition. It is demonstrated that at sufficiently low temperatures the order parameter and free energy density exhibit a kink due to the electron-hole asymmetry that is controlled by the radii of the nanotubes.
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