Our research focuses on epitaxial thin films of correlated oxides, with emphasis on vanadium Magnéli phases (VₙO₂ₙ₋₁) as model systems to study extended metal–insulator transitions. We investigate how crystallographic registry, dimensionality, and electronic structure control transport, phase transitions, and device-relevant behavior.

Magnéli Phases (Core Program)

We develop and study epitaxial thin films of V₃O₅ and V₄O₇ to investigate extended metal–insulator transitions with minimal hysteresis. These systems provide a platform to investigate transport mechanisms beyond canonical Mott and Peierls transitions.

Structure–Transport–Function Relationship

We combine x-ray diffraction, optical spectroscopy, and transport measurements to establish direct links between crystallographic registry, structural distortions, and electronic response in correlated oxides.

High-Frequency and Device Physics

We extend these materials into device-relevant regimes, including threshold switching, oscillatory behavior, and high-frequency (GHz) response, demonstrating their potential for electronic and neuromorphic applications.

Broader Materials Systems

We also investigate canonical metal–insulator transition systems such as VO₂ and V₂O₃, as well as related quantum materials, to establish reference points and extend our understanding of correlated electronic phases.

This research is supported by the Moore Foundation Experimental Physics Investigator program, enabling the development of new experimental platforms for correlated quantum materials.

The program establishes epitaxial Magnéli phases as a model platform to bridge fundamental physics and device functionality in correlated materials.