Seminar by Prof. Artem Mischenko: 'Twistronics and stacking control: programmable van der Waals materials' (Lecture)
- Friday 24 September 2021Add to my calendar
- from 10:00
prof. Artem Mischenko (Condensed Matter Physics, Dept. Physics and Astronomy, University of Manchester)
I will present our recent progress in the research of quantum properties of van der Waals materials. The advent of Van der Waals technology has allowed the development of many materials that did not exist before and has led to the observation of many exciting new physical phenomena in these materials due to the unique electronic, optical and mechanical properties of 2D atomic crystals. In particular, I will discuss how interlayer twist angle and stacking order can be used for deterministic control of the properties of van der Waals materials. Tuning twist angle (twistronics) became recently a huge field since electronic bands of 2D materials, their nontrivial topology, electron-electron interactions, and other structural and electronic degrees of freedom can be dramatically changed by a moiré pattern induced by twist angles between different layers. On the other hand, control of the stacking order provides an alternative approach to program quantum properties, and without the need for a moiré superlattice. Controlling stacking order in multilayer graphite films allowed us to discover the quantum Hall effect in hexagonal graphite and to find strong electronic correlations in rhombohedral graphite films.
prof. Alex Khajetoorians & prof. Peter Christianen
for zoomlink see email sent on September 20.