Topological phase detection through high-harmonic spectroscopy in extended Su-Schrieffer-Heeger chains
Topological phase detection through high-harmonic spectroscopy in extended Su-Schrieffer-Heeger chains
Su-Schrieffer-Heeger (SSH) chains are paradigmatic examples of one-dimensional topological insulators hosting zero-energy edge modes when the bulk of the system has a nonzero topological winding invariant. Recently, high-harmonic spectroscopy has been suggested as a tool for detecting the topological phase. Specifically, it has been shown that when the SSH chain …