Titanium Self-Intercalation in Titanium Diselenide Devices: Insights from In Situ Transmission Electron Microscopy.

ABSTRACT: Metallic transition metal dichalcogenides (MTMDCs) are of significant attention for various electronic applications due to their anisotropic conductivity, high electron mobility, superconductivity, and charge-density-waves (CDW). Understanding the correlations between electronic properties and structural transformations is crucial. In this study, a bias-induced structural transformation in vertical CDW-based 1T-TiSe₂ devices, transitioning from a 1T metallic phase to a distorted transition 1T_d phase and subsequently to an orthorhombic Ti₉Se₂ conducting phase, is reported. Using ex-situ and in-situ biasing transmission electron microscopy, dynamic structural changes, while electron energy loss spectroscopy analysis revealed valence state modificat

SUBMITTER: Sung HY 

PROVIDER: S-EPMC12038540 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature