Feixiang Xiang
Isolation of monolayer and few-layer graphene and other two-dimensional materials provides an opportunity to fabricate new types of heterostructures by stacking them layer by layer in a designed sequence [1]. Previous studies show that putting a graphene on a hexagonal boron nitride (hBN) substrate could form a Moiré pattern which generates a periodic potential and creates new Dirac points in the band structure [2-4]. However, in these studies only one of the graphene surfaces is utilized. In this talk, I will present my recent transport measurement results on a hBN encapsulated graphene device which Moiré periodic potential could form on both surfaces of graphene.
[1] Nature 499, 419 (2013) [2] Nature 497, 594 (2013) [3] Nature 497, 598 (2013) [4] Science 340, 1427 (2013)
About the presenter
Feixiang Xiang is studying the emergent physical properties of topological matter using quantum transport measurements. He can fabricate nano-devices and grow high-quality single crystals for quantum transport measurements.
In FLEET, he will explore the two-dimensional topological insulator state and exciton condensation in two-dimensional materials, which are crucial for realizing dissipationless devices. He works with Research theme 1, theme 2, and Enabling technology theme A.