Fig. 2
From: Theory of Coulomb drag in spatially inhomogeneous 2D materials

Embedding procedure of effective medium theory. An arbitrary ith pair of inclusions in the inhomogeneous layers are each embedded inside an effective medium. The effective in-plane conductivities of the inhomogeneous samples are given by \(\sigma _{\mathrm{A}}^{\mathrm{E}}\) and \(\sigma _{\mathrm{P}}^{\mathrm{E}}\) and the effective drag conductivity by \(\sigma _{\mathrm{D}}^{\mathrm{E}}\)