Tuning impurity states in bilayer graphene

Abstract

We study the impurity states in bilayer graphene in the unitary limit using Green's function method. Unlike in single layer graphene, the presence of impurities at two non-equivalent sites in bilayer graphene produce different impurity states which is understood as the change in the band structure due to interlayer hopping of electrons. The impurity states can also be tuned by changing the band structure of bilayer grahene through external electric field bias.

7 pages, 9 figures, sumbitted to PRB

References in corpus (19)

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• Two Dimensional Atomic Crystals
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• Effects of a Collective Spin Resonance Mode on the STM Spectra of D-Wave Superconductors

Cited by in corpus (19)

• Electronic properties of bilayer and multilayer graphene
• Remarks on the tight-binding model of graphene
• Electronic Transport in Disordered Bilayer and Trilayer Graphene
• Terahertz conductivity of twisted bilayer graphene
• Thermopower of gapped bilayer graphene
• The complete impurity scattering formalism in graphene
• Defect-induced magnetism and Yu-Shiba-Rusinov states in twisted bilayer graphene
• Bound States in Gapped Graphene with Impurities : Effective Low-Energy Description of Short-Range Interactions
• The role of pressure on the magnetism of bilayer graphene
• Sublattice dependence and gate-tunability of midgap and resonant states induced by native dopants in Bernal-stacked bilayer graphene
• Localized states due to expulsion of resonant impurity levels from the continuum in bilayer graphene
• Spectral footprints of impurity scattering in graphene nanoribbons
• Comparison of microscopic models for disorder in bilayer graphene: Implications for the density of states and the optical conductivity
• Electric bias control on impurity effects in bigraphene
• Impurities and electronic localization in graphene bilayers
• Impurity induced bound states and proximity effect in a bilayer exciton condensate
• Scattering in graphene with impurities : A low energy effective theory
• Fano-shaped impurity spectral density, electric-field-induced in-gap state and local magnetic moment of an adatom on trilayer graphene
• Collective resonances near zero energy induced by a point defect in bilayer graphene