Interplay between hopping dimerization and quasi-periodicity on flux-driven circular current in an incommensurate Su–Schrieffer–Heeger ring

In what follows we present our numerical results for the AAH SSH quantum ring system under different input conditions, and explore the critical roles played by the hopping dimerization and AAH modulation on energy band spectrum, flux-driven circular current, and electronic localization phenomena. The results are arranged and discussed in different sub-sections. Depending on \(t_{1}\) and \(t_{2}\), two different cases are taken into account: one is \(t_{1}<t_{2}\) and other is \(t_{1}>t_{2}\). For both these cases \(t_{1}\) is fixed to 1 eV, whereas \(t_{2}\) becomes 1.5 eV and 0.5 eV,…