Nano-infrared imaging of metal insulator transition in few-layer 1T-TaS₂.

ABSTRACT: Among the family of transition metal dichalcogenides, 1T-TaS₂ stands out for several peculiar physical properties including a rich charge density wave phase diagram, quantum spin liquid candidacy and low temperature Mott insulator phase. As 1T-TaS₂ is thinned down to the few-layer limit, interesting physics emerges in this quasi 2D material. Here, using scanning near-field optical microscopy, we perform a spatial- and temperature-dependent study on the phase transitions of a few-layer thick microcrystal of 1T-TaS₂. We investigate encapsulated air-sensitive 1T-TaS₂ prepared under inert conditions down to cryogenic temperatures. We find an abrupt metal-to-insulator transition in this few-layer limit. Our results provide new insight in contrast to p

SUBMITTER: Zhang SS 

PROVIDER: S-EPMC11501826 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature