Abstract
We calculate the conductivity of graphene in three monolayer graphene double-layer structures taking into account the presence of correlations of charged impurities. We use the Boltzmann transport theory and continuum model for the structure factor S\((\mathbf {q})\) to study the electrical conductivity of monolayer graphene in presence of the second layer (bilayer graphene, monolayer graphene, or two-dimensional electron gas (2DEG)) due to the screened Coulomb scattering at T = 0 K for different values of correlation length \(r_{\text {\tiny 0}}\), interlayer distance d and dielectric constant \(\epsilon _{\text {\tiny 2}}, \epsilon _{\text {\tiny 3}}\), and 2DEG material parameters. We find that for considered double-layer systems, the electrical conductivity \(\sigma \) increases with decreasing d for all values of \(r_0\) and increases strongly (slightly) with increasing \(\epsilon _2(\epsilon _3)\). We also show that \(\sigma \) increases slightly (considerably) with increasing \(\epsilon _3\) for \(\epsilon _3 = \epsilon _{2DEG}(\epsilon _3 = \epsilon _2 = \epsilon _{2DEG})\) and the influence of correlations on \(\sigma \) is negligible for low impurity concentration of layer I \(n_{i1}\) (\(n_{i1} \preceq \) \( 10^{12} {\text{ cm }}^{-2}\)).
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This manuscript has no associated data or the data will not be deposited. [Authors comment: This is a theoretical study and no experimental data has been listed.]
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Contributions
Le Kieu Oanh and Dang Khanh Linh did all calculations and wrote the manuscript. Nguyen Quoc Khanh supervised the project and improved the manuscript.
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Supplementary Information
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Appendix A: The structure of supplementary material
Appendix A: The structure of supplementary material
The supplementary material to the paper consists of the following subsections:
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A
The dependence of the effective interaction \(W_{11}\)(q) between correlated impurities and electron in layer I as a function of interlayer distance d.
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B
The dependence of the resistivity of layer I as a function of the impurity density \(n_{i1}\) for different values of \(n_1\).
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C
The dependence of the resistivity of layer I as a function of the impurity density \(n_{i1}\) for different value of \(\epsilon _2\).
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Oanh, L.T.K., Khanh, N.Q. & Linh, D.K. Effect of charged impurity correlations on electrical conductivity in monolayer graphene double-layer systems. Eur. Phys. J. B 95, 10 (2022). https://doi.org/10.1140/epjb/s10051-021-00273-x
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DOI: https://doi.org/10.1140/epjb/s10051-021-00273-x