Twistable electronics with dynamically rotatable heterostructures

Authors:
  • RRRebeca Ribeiro-Palau
    Rebeca Ribeiro-Palau
  • CZChangjian Zhang
    Changjian Zhang
  • KWKenji Watanabe
    Kenji Watanabe
  • TTTakashi Taniguchi
    Takashi Taniguchi
  • JHJames Hone
    James Hone
  • CDCory R. Dean
    Cory R. Dean
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Abstract
The electronic properties of two-dimensional materials and their heterostructures can be dramatically altered by varying the relative angle between the layers. This makes it theoretically possible to realize a new class of twistable electronics in which device properties can be manipulated on-demand by simply rotating the structure. Here, we demonstrate a new device architecture in which a layered heterostructure can be dynamically twisted, in situ. We study graphene encapsulated by boron nitride where at small rotation angles the device characteristics are dominated by coupling to a large wavelength Moir\'e superlattice. The ability to investigate arbitrary rotation angle in a single device reveals new features in the optical, mechanical and electronic response in this system. Our results establish the capability to fabricate twistable electronic devices with dynamically tunable properties.