Twisted Trilayer Graphene Under the Microscope

Stacking van der Waals layers provides new opportunities to design electronic band structure. The weak bonding between layers enables the addition of a relative twist and allows for relaxation into distinct local stacking configurations. Together, these effects generate spatially modulated electronic structure over a variety of length scales. Recent measurements of twisted trilayer graphene reveal a rich interplay between its structural and electronic degrees of freedom. Through joint imaging and transport studies, distinct limits of interlayer angles and the resulting electronic character are characterized. These results inform the broader phase diagram of twisted moiré multilayers and their unique quantum electronic phases.

Speaker: Ben Feldman, Stanford University