Strongly Correlated van der Waals Oxide: 2<i>H</i>-NbO₂.

ABSTRACT: Two-dimensional (2D) materials are attracting attention as an advanced class of materials. However, despite the strongly correlated electron systems exhibiting emergent properties, transition metal oxides are not recognized as 2D materials due to their infrequent van der Waals (vdW) crystal structures. Herein, we present a synthesis route for a vdW 2H-type transition metal dioxide, 2H-NbO₂, via a soft-chemical approach from the only 2H-type layered oxide LiNbO₂. By combining epitaxially stabilized thin films with a nanoscale thickness and solvothermal reaction, we successfully deintercalated Li, exceeding the bulk limit, while maintaining the single-crystal nature. We demonstrate that the synthesized 2H-NbO₂ is a correlated insul

SUBMITTER: Sato A 

PROVIDER: S-EPMC12312177 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature