| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
2d Crystalline Donors and Acceptors: Modulation Doping in Atomically-thin Heterostructures |
| Author(s) |
Erik A. Henriksen |
| On-Site Speaker (Planned) |
Erik A. Henriksen |
| Abstract Scope |
a-RuCl3 is a layered antiferromagnetic Mott insulator widely thought to host a close relative of the Kitaev quantum spin liquid state. It can be exfoliated down to monolayer thicknesses and incorporated into van der Waals heterostructures along with graphene and myriad other atomically thin materials. Proximity of a-RuCl3 to graphene (and other materials) leads to a significant charge transfer between the two that, surprisingly, persists even when a thin insulating layer is inserted between them, a phenomenon analogous to modulation doping in epitaxially-grown semiconductors. This heralds a new method of charge control in van der Waals stacks: we envision the construction of layered devices with both p- and n-type doping to recapitulate modern computing technology in atomically thin materials. We illustrate this potential with evidence for ultra-sharp pn junctions. |