Topological phases, edge modes, and the Hofstadter butterfly in coupled Su-Schrieffer-Heeger systems

10 Apr 2018 Padavić Karmela Hegde Suraj S DeGottardi Wade Vishveshwara Smitha

Motivated by recent experimental realizations of topological edge states in Su-Schrieffer-Heeger (SSH) chains, we theoretically study a ladder system whose legs are comprised of two such chains. We show that the ladder hosts a rich phase diagram and related edge mode structure dictated by choice of inter-chain and intra-chain couplings... (read more)

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  • MESOSCALE AND NANOSCALE PHYSICS