Understanding Strong Electronic Correlations at Nanoscales
T. Serkan KASIRGA
Abstract: Most transition metal oxides show metal-insulator transition but critical temperatures for the majority of these transitions lie at low temperatures, and their first order nature makes it difficult to study and employ such materials in applications. One exception is VO2 with a TC at 65 °C. Over five decades after its discovery, VO2 still attracts a lot of attention due to its exceptional properties, simple nature, and promised applications. It is very easy to grow high quality single crystal VO2 nanocrystals along its rutile c-axis, which shows no degradation and is stable under ambient conditions over extended periods. With the most recent discoveries about VO2, we are ever closer to understanding the true nature of this solid state phase transition and the realization of applications like Mott field effect transistors, novel memory devices, ultrafast optical switches, micro actuators, intelligent coatings, hydrogen sensors, and many others. In this talk I am going to discuss why we need strongly correlated materials for continuation of technological improvement, show the results of our experiments on VO2, and discuss the prospects of VO2 and other materials such as transition metal dichalcogenides.
Reminder: Tea and cookies will be in the seminar room before the seminar.