▎ 摘　　要

We calculate the dielectric function of a system composed of a pair of electrically isolated Bernal graphene bilayers separated by a spacer as a function of temperature T, interlayer distance d and spacer dielectric constant epsilon(2). Using the obtained results for dielectric function we calculate finite-temperature electrical conductivity of the first layer in presence of the second one due to the screened Coulomb scattering for different values of temperature, interlayer distance and dielectric constants epsilon(2), epsilon(3). (C) 2018 Elsevier Ltd. All rights reserved.