The electron-hole superfluidity in two coaxial nanotubes

Oleg L. Berman; Ilya Grigorenko; Roman Ya. Kezerashvili

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arXiv · 1312.7586

The electron-hole superfluidity in two coaxial nanotubes

Oleg L. Berman·Ilya Grigorenko·Roman Ya. Kezerashvili

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Abstract

The superfluid phase and Coulomb drag effect caused by the pairing in the 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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Oleg L. Berman, Ilya Grigorenko, Roman Ya. Kezerashvili. 2013-12-29. The electron-hole superfluidity in two coaxial nanotubes. https://arxiv.org/abs/1312.7586

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