Event Description
Join us Thursday, December 7th at 3:30pm for our final colloquium of the Fall Term! Dr. Pavel Volkov will be joining us from the University of Connecticut's Department of Physics!
Abstract:
The discovery of two-dimensional materials consisting of single-unit-cell thick layers have opened vast possibilities to create new materials by stacking and aligning monolayers. Recent experiments on twisted graphene and transition metal dichalcogenide bilayers have demonstrated that twisting the stacked layers adds a crucial ingredient, leading to realization of exotic phases of electronic matter, such as correlated superconductors and topological electronic states.
Intriguingly, a well-known example of correlated superconductors – high-Tc cuprates, can be realized in monolayer form. In my talk, I will show that twisted bilayers of such unconventional superconductors allow to realize a number of coveted phases of electronic matter, tunable on demand. In particular, the application of an interlayer current transforms the system into a topological superconductor at any nonzero twist angle. Moreover, at large twist angles, this system is predicted to exhibit spontaneous magnetism arising from the orbital moment of Cooper pairs. In view of these theoretical expectations, I will discuss the recent experimental progress on twisted flakes of high-Tc superconductors.
Can't make it? Join us on Zoom!
Passcode: 010907
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