299 citations · 2.5k across the 42 of their papers we have counts for
8 papers · 1 filter
Origins of bad metal conductivity and the insulator-metal transition in the rare-earth nickelates
R. Jaramillo, Sieu D. Ha, D. M. Silevitch +1
For most metals, increasing temperature (T) or disorder will quicken electron scattering. This hypothesis informs the Drude model of electronic conductivity. However, for so-called…
Voltage-triggered Ultra-fast Metal-insulator Transition in Vanadium Dioxide Switches
You Zhou, Xiaonan Chen, Changhyun Ko +3
Electrically driven metal-insulator transition in vanadium dioxide (VO2) is of interest in emerging memory devices, neural computation, and high speed electronics. We report on the…
Direct in-situ observation of structural transition driven actuation in VO2 utilizing electron transparent cantilevers
Viswanath Balakrishnan, Shriram Ramanathan
Direct imaging and quantification of actuation in nanostructures that undergo structural phase transitions could advance our understanding of collective phenomena in the solid stat…
GaN / VO2 heteroepitaxial p-n junctions: Band offset and minority carrier dynamics
You Zhou, Shriram Ramanathan
We report on experimental realization of p-n heterojunctions based on p-type GaN, and an n-type correlated oxide, VO2. The band offsets are evaluated by current-voltage and capacit…
Electrical switching dynamics and broadband microwave characteristics of VO2 RF devices
Sieu D. Ha, You Zhou, Christopher J. Fisher +2
Vanadium dioxide is a correlated electron system that features a metal-insulator phase transition (MIT) above room temperature and is of interest in high speed switching devices. H…
Electrostatic gating of metallic and insulating phases in SmNiO3 ultrathin films
Sieu D. Ha, Ulrich Vetter, Jian Shi +1
The correlated electron system SmNiO3 exhibits a metal-insulator phase transition at 130 °C. Using an ionic liquid as an electric double layer (EDL) gate on three-terminal ultrathi…