Metallic ground states of undoped Ti₂O₃ films induced by elongated c-axis lattice constant.

ABSTRACT: Ti₂O₃ exhibits unique metal-insulator transition (MIT) at ~ 450 K over a wide temperature range of ~ 150 K. The close relationship between MIT and crystal deformation has been proposed. However, as physical properties are governed by the thermodynamic equilibrium in bulk systems, conducting experimental studies under different lattice deformations remains challenging. Epitaxial thin films can offer high flexibility to accommodate adaptive crystal lattices and provide efficient platforms for investigating the MIT. In this study, we report the synthesis of corundum-type Ti₂O₃ films on various growth temperatures. We found that the metallic ground states appeared in the films grown at low temperatures. The electronic ground states were further inves

SUBMITTER: Yoshimatsu K 

PROVIDER: S-EPMC7747712 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature