Role of thermal heating on the voltage induced insulator-metal transition in VO2

A. Zimmers, L. Aigouy, M. Mortier, A. Sharoni, Siming Wang, K. G. West, J. G. Ramirez, Ivan K. Schuller

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

We show that the main mechanism for the dc voltage or dc current induced insulator-metal transition in vanadium dioxide VO2 is due to local Joule heating and not a purely electronic effect. This "tour de force" experiment was accomplished by using the fluorescence spectra of rare-earth doped micron sized particles as local temperature sensors. As the insulator-metal transition is induced by a dc voltage or dc current, the local temperature reaches the transition temperature indicating that Joule heating plays a predominant role. This has critical implications for the understanding of the dc voltage or dc current induced insulator-metal transition and has a direct impact on applications which use dc voltage or dc current to externally drive the transition.

اللغة الأصليةالإنجليزيّة
رقم المقال056601
دوريةPhysical Review Letters
مستوى الصوت110
رقم الإصدار5
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 29 يناير 2013

All Science Journal Classification (ASJC) codes

  • !!General Physics and Astronomy

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