Interface-induced collective phase transition in VO₂-based bilayers studied by layer selective spectroscopy.

ABSTRACT: We investigated the origin of collective electronic phase transitions induced at the heterointerface between monoclinic insulating VO₂ and rutile metallic electron-doped VO₂ layers using in situ soft X-ray photoemission spectroscopy (PES) and X-ray absorption spectroscopy (XAS) on nanoscale VO₂/V_0.99W_0.01O₂ (001)_R bilayers. Thanks to the surface sensitivity of PES and XAS, we determined the changes in the electronic structure and V-V dimerization in each constituent layer separately. The layer selective observation of the electronic and crystal structures in the upper VO₂ layer of the bilayer indicates that the monoclinic insulating phase VO₂ layer undergoes a transition to the rutile metalli

SUBMITTER: Shiga D 

PROVIDER: S-EPMC12540892 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature