We study the intervalley scattering induced by Coulomb repulsion as a purely electronic mechanism for origin of superconductivity in few layers graphene. The pairing is strongly favored presence van Hove singularities density states. consider three different heterostructures: twisted bilayer graphene, rhombohedral trilayer and Bernal obtain trends estimates superconducting critical temperature ...

The properties of graphene are strongly affected by metal adsorbates and clusters on graphene. Here, we study the effect of a thin layer of platinum (Pt) metal on exfoliated single, bi- and trilayer graphene and on chemical vapor deposition-grown single-layer graphene by using Raman spectroscopy and transport measurements. The Raman spectra and transport measurements show that Pt affects the st...

Mechanically straining graphene opens the possibility to exploit new properties linked to the stressed lattice of this two-dimensional material. In particular, theoretical analyses have forecast that straining graphene by more than 10% is a requirement for many novel applications that have not yet been experimentally demonstrated. Recently, we reported having achieved 12.5% strain in a trilayer...

The Bernal (ABA)-stacked graphene trilayer is presumed to be thermodynamically more stable than the rhombohedral (ABC) counterpart. However, the thermal transformation from ABC to ABA domains does not occur at a temperature lower than 1,000 °C. Here we report that ABC-stacked trilayers are transformed to ABA-stacked layers after an organic molecule triazine is evaporated onto graphene surfaces ...

We study the symmetries of twisted trilayer graphene's band structure under various extrinsic perturbations, and analyze role long-range electron-electron interactions near first magic angle. The electronic is modified by these in a similar way to bilayer graphene. electron pairing due long-wavelength charge fluctuations, which are coupled among themselves via Coulomb interaction additionally m...

Bernal stacked bilayer graphene subject to a superlattice potential can realize topological and flat bands [Ghorashi et al., Phys. Rev. Lett. 130, 196201 (2023)]. In the present work, we extend study of on heterostructures trilayer quadrilayer graphene. Comparing Bernal- chirally multilayers reveals that latter are more suitable for realizing stacks many bands. On other hand, Bernal-stacked Imp...