Abstract

Vanadium dioxide (VO₂) is a phase transition material, which accompanies a drastic change in resistivity of 3 orders of magnitude between insulator and metallic phases. [1] Under room temperature, VO₂ shows an insulator phase with higher resistivity, on the other hand, above the phase transition temperature, it becomes a metallic phase with low resistivity. Its phase transition can be triggered by applying heat, voltage, and light, resulting in a hysteresis characteristic which realizes the electrical or light switching devices.

© 2017 Japan Society of Applied Physics, Optical Society of America