Lattice-Driven Chiral Charge Density Wave State in 1T-TaS${}_2$

Abstract

We use scanning tunneling microscopy to study the domain structure of the nearly-commensurate charge density wave (NC-CDW) state of 1T-TaS${}_2$. In our sub-angstrom characterization of the state, we find a continual evolution of the CDW lattice from domain wall to domain center, instead of a fixed CDW arrangement within a domain. Further, we uncover an intradomain chirality characterizing the NC-CDW state. Unlike the orbital-driven chirality previously observed in related transition metal dichalcogenides, the chiral nature of the NC-CDW state in 1T-TaS${}_2$ appears driven by a strong coupling of the NC-CDW state to the lattice.

References in corpus (5)

• The low-temperature highly correlated quantum phase in the charge-density-wave 1T-TaS_2 compound
• Pressure dependence of the charge density wave in 1T-TaS2 and its relation to superconductivity
• Atomic-Scale Visualization of Chiral Charge Density Wave States and Their Reversible Transition
• Possible strain induced Mott gap collapse in 1T-TaS${}_2$
• Chiral charge density waves induced by Ti-doping in 1T-TaS2

Cited by in corpus (3)

• Visualization of Chiral Electronic Structure and Anomalous Optical Response in a Material with Chiral Charge Density Waves
• Origin of chirality in transition-metal dichalcogenides
• Delusive chirality and periodic strain pattern in moiré systems