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arXiv · 1811.09373

Bogolon-mediated electron scattering in graphene in hybrid Bose-Fermi systems

Meng Sun·K. H. A. Villegas·V. M. Kovalev·I. G. Savenko
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Abstract

We report on an unconventional mechanism of electron scattering in graphene in hybrid Bose- Fermi systems. We study energy-dependent electron relaxation time, accounting for the processes of emission and absorption of a Bogoliubov excitation (a bogolon). Then using the Bloch-Gruneisen approach, we find the finite-temperature resistivity of graphene and show that its principal behavior is $\sim T^4$ in the limit of low temperatures and linear at high temperatures. We show that bogolon-mediated scattering can surpass the acoustic phonon-assisted relaxation. It can be controlled by the distance between the layers and the condensate density, giving us additional degrees of freedom and a useful tool to render electron mobility by the sample design and external pump.

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Meng Sun, K. H. A. Villegas, V. M. Kovalev, I. G. Savenko. 2018-11-23. Bogolon-mediated electron scattering in graphene in hybrid Bose-Fermi systems. https://doi.org/10.1103/physrevb.99.115408

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