Qualitative investigation of electrical conductivity in three-layer graphene structures
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https://doi.org/10.15625/0868-3166/21634Keywords:
Correlated impurities, Monolayer graphene (MLG), Double-layer system, Multi random phase approximationAbstract
We study the electrical conductivity \(\sigma_1, \sigma_2, \sigma_3\) of a three-layer graphene system made of parallel-placed monolayer graphene layers. This investigation consists of three steps. The first step is calculating the effective interactions \(W_{11}, W_{22}, W_{33}\) between impurities and electrons by using the multi-component random phase approximation. The second step is defining the dependence of \(W_{11}^2, W_{22}^2, W_{33}^2\) on interlayer distance \(d\). The last step is identifying the proportional relation between \(W_{11}^2, W_{22}^2, W_{33}^2\) and \(\sigma_1, \sigma_2, \sigma_3\). Based on the obtained results, we deduce the rules of change of \(\sigma_1, \sigma_2, \sigma_3\) when \(d\) vary. The final result is, hence, the basis for calculating the dependence of conductivity in a three-layer graphene system on other parameters.
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