Spectroscopic visualization and phase manipulation of chiral charge density waves in 1T-TaS₂.

ABSTRACT: The chiral charge density wave is a many-body collective phenomenon in condensed matter that may play a role in unconventional superconductivity and topological physics. Two-dimensional chiral charge density waves provide the building blocks for the fabrication of various stacking structures and chiral homostructures, in which physical properties such as chiral currents and the anomalous Hall effect may emerge. Here, we demonstrate the phase manipulation of two-dimensional chiral charge density waves and the design of in-plane chiral homostructures in 1T-TaS₂. We use chiral Raman spectroscopy to directly monitor the chirality switching of the charge density wave-revealing a temperature-mediated reversible chirality switching. We find that interlayer stacking favours homochiralit

SUBMITTER: Zhao Y 

PROVIDER: S-EPMC10115830 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature