Reply to the Comment on "Negative Landau damping in bilayer graphene"

Abstract

Here we address the concerns of Svintsov and Ryzhii [arXiv:1812.03764] on our article on negative Landau damping in graphene [Phys. Rev. Lett. 119, 133901 (2017)]. We prove that due to the differences between the kinetic and canonical momenta, the conductivity of drift-current biased graphene is ruled by a Galilean transformation when the electron-electron interactions predominate and force the electron gas to move with constant velocity, similar to a moving medium. Furthermore, it is shown that the nonlocal effects in graphene neither preclude a negative Landau damping nor the emergence of instabilities in graphene platforms.

On July 2019, during the 2nd proofs stage, Svintsov and Ryzhii recognized that their Eq. (2) had a mistake that led to unphysical instabilities and fixed that specific problem. Here, we critically analyze their formalism and show that the non-equilibrium distribution is used incorrectly in conjunction with the Lindhard formula

References in corpus (3)

• Electric current induced unidirectional propagation of surface plasmon-polaritons
• Drift-induced Unidirectional Graphene Plasmons
• Comment on "Negative Landau damping in bilayer graphene"

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• Current-induced nonreciprocity and refraction-free propagation in a one-dimensional graphene-based photonic crystal