Semi-analytic study on the conductance of a lengthy armchair honeycomb nanoribbon including vacancies, defects, or impurities

Nadri Fateme¹, Mardaani Mohammad^{1, 2, †}, Rabani Hassan^{1, 2}

(a) By applying the transformation matrix U₁ (see Eq. (A1)) on the Hamiltonian of leads presented in Eqs. (3)–(5), (M−1)/2 equivalent ladder networks (black) and an independent chain (green) are achieved. (b) By applying the transformation matrix U₂ (see Eq. (A2)), each ladder is converted to an equivalent PA-like chain with on-sites and hopping terms which are given by Eqs. (A6) and (A7).