Correlation-induced emergent charge order in metallic vanadium dioxide

DOI: 10.1103/PhysRevB.105.035150

Authors: Christopher N. Singh (Binghamton University) , Louis F. J. Piper (University of Warwick) , Hanjong Paik (Cornell University) , Darrell G. Schlom (Cornell University; Kavli Institute at Cornell for Nanoscale Science) , Wei-Cheng Lee (Binghamton University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 105

State: Published (Approved)
Published: January 2022
Diamond Proposal Number(s): 25355 , 13812

Abstract: Recent progress in the growth and characterization of thin-film VO 2 has shown its electronic properties can be significantly modulated by epitaxial matching. To throw new light on the concept of “Mott engineering,” we develop a symmetry-consistent approach to treat structural distortions and electronic correlations in epitaxial VO 2 films under strain, and compare our design with direct experimental probes. We find strong evidence for the emergence of correlation-driven charge order deep in the metallic phase, and our results indicate that exotic phases of VO 2 can be controlled with epitaxial stabilization.

Journal Keywords: Charge density waves; Epitaxial strain; Exotic phases of matter; Single crystal materials; Vanadates; Density functional theory; X-ray absorption spectroscopy

Subject Areas: Materials, Physics


Instruments: I09-Surface and Interface Structural Analysis

Added On: 09/02/2022 10:17

Discipline Tags:

Surfaces Quantum Materials Hard condensed matter - electronic properties Physics Materials Science interfaces and thin films

Technical Tags:

Spectroscopy X-ray Absorption Spectroscopy (XAS) Near Edge X-ray Absorption Fine Structures (NEXAFS)