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American Institute of Physics, Applied Physics Letters, 14(90), p. 143111

DOI: 10.1063/1.2719670

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Negative Differential Resistance of Electrons in Graphene Barrier

Journal article published in 2007 by D. Dragoman, M. Dragoman ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The graphene is a native two-dimensional crystal material consisting of a single sheet of carbon atoms. In this unique one-atom-thick material, the electron transport is ballistic and is described by a quantum relativisticlike Dirac equation rather than by the Schrödinger equation. As a result, a graphene barrier behaves very differently compared to a common semiconductor barrier. The authors show that a single graphene barrier acts as a switch with a very high on-off ratio and displays a significant differential negative resistance, which promotes graphene as a key material in nanoelectronics.