Title: Probing Phase Transitions inTopological 2D Materials
Van der Waals materials exhibit a rich phase diagram shaped by structural changes and electronic order in both interlayer and intralayer arrangements. An example is twistronics, where tuning interlayer stacking leads to novel electronic properties. A deeper understanding of phase transitions in 2D materials and their effects on optical and electrical properties will unlock new opportunities for the development of 2D-material-based devices. In this talk, I will present experimental studies on phase transitions in topological 2D materials such as TaIrTe₄ and MoTe₂. First, I will discuss the nonlinear Hall response as a sensitive probe for mapping the phase diagram of TaIrTe₄ and how this method reveals the relationship between structural and topological properties. Second, I will explore the use of nanomechanical resonators to investigate phase transitions between different stacking orders.
Host: You Zhou
Refreshments at 1:30 pm - 1117 John S. Toll Bldg