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●, change in interbase distance (yn) vs. site number characterizing a polaron on a periodic base stack with 2 different bp. *, |ψ|2 for the hole on the polaron in this case. The dashed lines indicate the symmetric polaron solution of the equations; the solid lines indicate the asymmetric polaron solution. Both polarons were calculated with the following parameters: t0 = 0.3 eV, α = 0.6 eV/Å, K = 0.85 eV/Å2, and Δ = 0.65 eV.
