Spectral approach to transport in the two-dimensional honeycomb lattice with substitutional disorder

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dc.contributor.authorKostadinova, Eva Georgieva, 1992-
dc.contributor.authorLiaw, C. D.
dc.contributor.authorHering, Amanda S.
dc.contributor.authorCameron, Adam
dc.contributor.authorGuyton, Forrest.
dc.contributor.authorMatthews, Lorin Swint.
dc.contributor.authorHyde, Truell Wayne.
dc.date.accessioned2019-07-16T14:52:18Z
dc.date.available2019-07-16T14:52:18Z
dc.date.issued2019-01
dc.description.abstractThe transport properties of a disordered two-dimensional (2D) honeycomb lattice are examined numerically using the spectral approach to the 2D percolation problem, characterized by an Anderson-type Hamiltonian. In our model, disorder is represented by two parameters: a distribution of random on-site energies ε_i (positional disorder) and a concentration of doping energies p (substitutional disorder). The results indicate the existence of extended energy states for nonzero disorder and the emergence of a transition towards localized behavior for critical doping concentration n_D > 0.3%, in agreement with the experimentally observed metal-to-insulator transition in a graphene sheet doped with hydrogenen_US
dc.description.keywordsspectral methoden_US
dc.description.keywordstransporten_US
dc.description.keywords2D materialen_US
dc.identifier.citationPhysical Review B, 99, (2), 024115, January, 2019en_US
dc.identifier.doi10.1103/PhysRevB.99.024115
dc.identifier.urihttps://hdl.handle.net/2104/10641
dc.language.isoenen
dc.publisherPhysical Review Ben_US
dc.titleSpectral approach to transport in the two-dimensional honeycomb lattice with substitutional disorderen_US
dc.typeArticleen

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