Boosting in-plane anisotropy by periodic phase engineering in two-dimensional VO₂ single crystals.

ABSTRACT: In-plane anisotropy (IPA) due to asymmetry in lattice structures provides an additional parameter for the precise tuning of characteristic polarization-dependent properties in two-dimensional (2D) materials, but the narrow range within which such method can modulate properties hinders significant development of related devices. Herein we present a novel periodic phase engineering strategy that can remarkably enhance the intrinsic IPA obtainable from minor variations in asymmetric structures. By introducing alternant monoclinic and rutile phases in 2D VO₂ single crystals through the regulation of interfacial thermal strain, the IPA in electrical conductivity can be reversibly modulated in a range spanning two orders of magnitude, reaching an unprecedented IPA of 113. Such an intr

SUBMITTER: Ran M 

PROVIDER: S-EPMC11197522 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature