Document Type
Article
Publication Date
4-3-2018
Department
Department of Physics
Abstract
Quantum dots, quantum rings, and, most recently, quantum dot-ring nanostructures have been studied for their interesting potential applications in nanoelectronic applications. Here, the electronic properties of a dot-ring hetero-nanostructure consisting of a graphene ring and graphene dot with a hexagonal boron nitride (h-BN) ring serving as barrier between ring and dot are investigated using density functional theory. Analysis of the character of the wave functions near the Fermi level and of the charge distribution of this dot-ring structure and calculations of the quantum transport properties find asymmetry in the conductance resonances leading to asymmetric I–V characteristics which can be modified by applying a negative voltage potential to the central graphene dot.
Publication Title
Journal of Physics Communications
Recommended Citation
Seel, M.,
&
Pandey, R.
(2018).
Electronic and quantum transport properties of a graphene-BN dot-ring hetero-nanostructure.
Journal of Physics Communications,
2(4), 1-9.
http://doi.org/10.1088/2399-6528/aab7df
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/399
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Version
Publisher's PDF
Publisher's Statement
© 2018 The Author(s). Published by IOP Publishing Ltd. Publisher’s version of record: https://doi.org/10.1088/2399-6528/aab7df