For purposes of the model, the graphene/Pd hybrid was approximated by a charged graphene sheet. The resulting structure exhibited π–π expansion approaching the Γ point of the Brillouin zone which was validated by tracking the Raman D band dispersion....
band structure of high mobility graphene with one to seven layers by measuring the quantum oscillation of magnetoresistance. The Landau fan diagram showed distinct structures that reflected differences in the band structure, as if they were finger prints of multilayer graphene. In particular, an even...
5 for Bernal and rhombohedral trilayer graphene (TLG). Furthermore, for a given stacking, the band structure significantly changes as a function of the number of layers, N (ref. 6). An even wider range of properties is accessible by creating MLG with stacking arrangements different from those...
Probing the band structure of quadri-layer graphene with magneto-phonon resonance We show how the magneto-phonon resonance, particularly pronounced in sp2 carbon allotropes, can be used as a tool to probe the band structure of multilayer... C Faugeras,P Kossacki,AAL Nicolet,... - 《New Jou...
Using first-principles density-functional theory, we study the electronic structure of multilayer graphene nanoribbons as a function of the ribbon width and the external electric field, applied perpendicular to the ribbon layers. We consider two types of edges (armchair and zigzag), each with two ...
Here we show that this expectation does not correspond to reality by revealing the occurrence of an insulating state close to charge neutrality in Bernal-stacked tetralayer graphene. The phenomenology-incompatible with the behaviour expected from the single-particle band structure-resembles that observed...
We numerically demonstrate a tunable broadband terahertz absorber with near-unity absorption by using multilayer graphene ribbons sandwiched in a plasmonic integrated structure. By stacking slightly different widths of graphene ribbons in a sandwiched configuration, the absorption bandwidth can be increased be...
To increase the sensitivity of the Raman signal, interference enhancement [125,126] by exploiting the multiple reflections occurring on the SiO2–Si substrate can be used. Typical graphene layers or TMDs are fabricated on a Si substrate with a capping layer of silicon oxide several hundred nanomet...
The ultrafine diamond crystallites, which were generated in situ by transformation of disordered graphene fragments in parent compressed GC, are of cubic crystal structure, and the multiple sub-twins can be observed on the low-energy {111} planes of nanodiamond. The size of sub-twins in the ...
Superconductivity has been observed in moiré systems such as twisted bilayer graphene, which host flat, dispersionless electronic bands. In parallel, theory work has discovered that superconductivity and superfluidity of flat-band systems can be made possible by the quantum geometry and topology of the...