[2Ca07-13] TF/SE/EMP/MI/MS

[2Ca12] Modulation of Metal-Insulator Transition Properties in the strain-controlled VO₂ micro sample

*Ai I. Osaka¹, Rui Li¹, Liliany N. Pamasi², Ken Hattori², Hidekazu Tanaka¹, Azusa N. Hattori¹ (1. SANKEN, Osaka University, 2. Graduate School of Science and Technology, NAIST)

VO₂, which is a strongly correlated metal dioxide, has the potential to be fabricated as a thermal trigger because ofthe characteristics of metal-insulator transition (MIT) around the room temperature. In this research, in order to clarify the MIT behavior affected by the planarly confinement effect, the MIT process of VO₂ micron structures was systematically studied, and the phenomenon of the phase transition temperature change depending on the confined VO₂ structures size was found. As the sample size increases from 2 um to 10 um, the phase transition temperature shows a totally upward trend from 268 K ~ 277K to 276 K ~ 285K. This result implies that the transition temperature was converted by virtues of the spatial confinement.