Vanadium Dioxide: Distinct Length Scales in the VO2 Metal–Insulator Transition Revealed by Bi-chromatic Optical Probing (Advanced Optical Materials 1/2014)




Vanadium dioxide exhibits a thermally induced metalinsulator transition near room temperature. Metallic puddles nucleate and coarsen, embedded in the insulating matrix. The coexistence of these two phases spans distinct length scales as their relative domain sizes change. On page 30, using far-field optical probing at very different frequencies, R. A. Lukaszew and co-workers are able to follow the dynamic evolution of these phases across the transition.