Micrometer-scale ballistic transport in encapsulated graphene at room temperature.

Mayorov, Alexander S; Gorbachev, Roman V; Morozov, Sergey V; Britnell, Liam; Jalil, Rashid; Ponomarenko, Leonid A; Blake, Peter; Novoselov, Kostya S et al. · Nano Lett · 2011

basic_science · Level V

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Abstract

Devices made from graphene encapsulated in hexagonal boron-nitride exhibit pronounced negative bend resistance and an anomalous Hall effect, which are a direct consequence of room-temperature ballistic transport at a micrometer scale for a wide range of carrier concentrations. The encapsulation makes graphene practically insusceptible to the ambient atmosphere and, simultaneously, allows the use of boron nitride as an ultrathin top gate dielectric.

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