A robust and tunable Luttinger liquid in correlated edge of transition-metal second-order topological insulator Ta₂Pd₃Te₅.

ABSTRACT: The interplay between topology and interaction always plays an important role in condensed matter physics and induces many exotic quantum phases, while rare transition metal layered material (TMLM) has been proved to possess both. Here we report a TMLM Ta₂Pd₃Te₅ has the two-dimensional second-order topology (also a quadrupole topological insulator) with correlated edge states - Luttinger liquid. It is ascribed to the unconventional nature of the mismatch between charge- and atomic- centers induced by a remarkable double-band inversion. This one-dimensional protected edge state preserves the Luttinger liquid behavior with robustness and universality in scale from micro- to macro- size, leading to a significant anisotropic electrical transport through two-dim

SUBMITTER: Wang A 

PROVIDER: S-EPMC10667360 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature