Electrically driven reversible insulator-metal phase transition in Ca2RuO4

Abstract

We have investigated the electrically induced IMT in Ca2RuO4 thin films whose transition temperature has been increased by >190 K (TIMT > 550K) using epitaxial strain engineering. We show using DC and transient I-V measurements that the electrically induced phase transition is electro-thermal in nature, and is driven by current induced self-heating.