Quasi-Particle Spectra on Substrate and Embedded Graphene Monolayers

Feher, A.; Syrkin, E. S.; Feodosyev, S. B.; Gospodarev, I. A.; Kravchenko, K. V.

doi:10.5772/13795

Cited by 6 publications

(9 citation statements)

References 37 publications

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“…The presence of vacancies in graphite causes the appearance of sharp resonance in electron density of states near F ε = ε , and in [19] the similar effect was predicted for bigraphene. Similar to vacancy, the considered imperfection is due to breaking the atomic bonds, and the same effect on electron spectrum can be expected here, at least for particular configurations.…”

Section: The Electron Ldos For Atoms Around Step-edges Of Different Csupporting

confidence: 54%

“…2. (Color online) Spectral phonon properties originated by step-edge imperfection compared to graphene and its derivatives: (a) displacement along the c axis of the atom in step-edge zig-zag A (1); clean bigraphene (2), graphite (3), Ca-intercalated graphite [5,19] (4). Inset: symbols are neutron measurements of phonon densities for CaC 6 , solid line ab simulations [21].…”

Section: Electron Spectrum Of Metallic Bigraphenementioning

confidence: 99%

“…The Dirac V-shape singularity of electron density of states (DOS) in the point of charge neutrality, coincident with Fermi energy ε F in graphene, makes the corresponding spectral characteristics and, eventually, transport properties highly sensitive to the type and content of crystal imperfections in graphene-based compounds [9][10][11][12][13][14][15][16][17][18][19]. The semiconducting [20]/superconducting [21,22] gaps opening, for instance, is assumed.…”

Section: Introductionmentioning

confidence: 99%

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Effect of step-edge on spectral properties and planar stability of metallic bigraphene

Eremenko

Sirenko

Gospodarev

et al. 2016

Low Temperature Physics

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Phonon and electron spectra of metallic bigraphene are analyzed in the presence of step-edge crystal imperfection. Different geometries of step-edge are considered. The dynamic planar stability of the considered structure is proved for temperatures above the ambient. The number of phonon states is shown to grow near the K-point of the first Brillouin zone, compared to pristine graphene. It is found, that this type of defects causes substantially nonuniform distribution of electron states and the pronounced increase in the number of states with energies close to Fermi energy can be expected in electron spectrum of the graphene-based compounds. The performed calculations are in good agreement with inelastic neutron, x-ray and Raman measurements.

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Section: The Electron Ldos For Atoms Around Step-edges Of Different Csupporting

confidence: 54%

Section: Electron Spectrum Of Metallic Bigraphenementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of step-edge on spectral properties and planar stability of metallic bigraphene

Eremenko

Sirenko

Gospodarev

et al. 2016

Low Temperature Physics

View full text Add to dashboard Cite

show abstract

“…Presence of impurities lowers the symmetry. The influence of vacancies placed into one of the graphene sublattices was investigated in [12], where it was shown that the equivalence of the sublattices is broken.…”

Section: Impurity Levels In the Electron Spectra Of Graphenementioning

confidence: 99%

“…The local density of states of the nitrogen substitutional impurity calculated in [11] has quasi-local maxima in both intervals. For an boron substitutional impurity ( η ≈ 0.5 ) [6], quasilocalized states are absent in the − ε(M ), ε(M ) interval [12]. Figure 2 shows the graphical solution of the Lifshitz equation (2) for a given impurity atom.…”

Section: Impurity Levels In the Electron Spectra Of Graphenementioning

confidence: 99%