Control over the film-substrate interaction is key to the exploitation of graphene’s unique electronic properties. Typically, a buffer layer is irreversibly intercalated “from above” to ensure decoupling. For graphene/Ni(111) we instead tune the film interaction “from below”. By temperature controlling the formation/dissolution of a carbide layer under rotated graphene domains, we reversibly switch graphene’s electronic structure from semi-metallic to metallic. Our results are relevant for the design of controllable graphene/metal interfaces in functional devices.

Switchable graphene-substrate coupling through formation/dissolution of an intercalated Ni-carbide layer

PATERA, LAERTE LUIGI;ZAMBORLINI, GIOVANNI;Sala, Alessandro;COMELLI, GIOVANNI
2016-01-01

Abstract

Control over the film-substrate interaction is key to the exploitation of graphene’s unique electronic properties. Typically, a buffer layer is irreversibly intercalated “from above” to ensure decoupling. For graphene/Ni(111) we instead tune the film interaction “from below”. By temperature controlling the formation/dissolution of a carbide layer under rotated graphene domains, we reversibly switch graphene’s electronic structure from semi-metallic to metallic. Our results are relevant for the design of controllable graphene/metal interfaces in functional devices.
2016
http://www.nature.com/articles/srep19734
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2891302
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