Twisted bilayer grapheneStrainRaman spectroscopyIn this work, we have synthesised twisted bilayer graphene on nickel substrate by chemical vapour deposition. The Moir茅 superlattice generated by a misorientation in the stacking of two layers of graphene was studied. Raman spectroscopy was used to ...
Magic-angle twisted bilayer graphene has emerged as a powerful platform for studying strongly correlated electron physics, owing to its almost dispersionless low-energy bands and the ability to tune the band filling by electrostatic gating. Techniques to control the twist angle between graphene layers ...
Moiré tuning of the band structure has led to the recent discovery of superconductivity3,4 and correlated insulating phases5 in twisted bilayer graphene (TBG) near the ‘magic angle’ of twist of about 1.1 degrees, with a phase diagram reminiscent of high-transition-temperature superconductors. ...
We have performed an ab initio investigation of transition metals (TMs = Mo, Ru, Co, and Pt) embedded in twisted bilayer graphene (tBG) layers. Our total energy results reveal that, triggered by the misalignment between the graphene layers, Mo and Ru atoms may form a quasiperiodic (triangul...
Among the findings that have sparked the most interest in the field of twistronics is the discovery of robust and reproducible superconductivity in MATBG1,27,30, with preliminary evidence for possible superconductivity also present in twisted double-bilayer graphene49,50,51, ABC trilayer graphene ali...
The importance of the relaxation was also pointed out for low angle twisted bilayer graphene (TBLG), where an energy gap of up to 20 meV opens at the superlattice subband edge18,23, which is also found in experiments15,24 and is needed to fully describe the Mott-physics of the system....
The Tip-Induced Twisted Bilayer Graphene Superlattice on HOPG: Capillary Attraction EffectPhysics - Chemical PhysicsCondensed Matter - Materials ScienceorgWe use the tip of the scanning tunneling microscope (STM) to manipulate single weakly bound nanometer-sized sheets on the the highly oriented ...
The combination of miss-alignment and point defects on the electronic structure of bilayer graphene can lead to special properties, which deserve a theoretical investigation, since they are scarcely studied up to now. Although most graphene layers are nominally free of defects, they can be ...
Here, we report our scanning tunneling microscope (STM) work on reaching these correlated insulating states in twisted monolayer–bilayer graphene through a decorated tip. It acts as a local top gate, leading to an enhanced local D, and enables us to fully lift the 8-fold degeneracy of the ...
Graphenetwist bilayerhelical networkFermi surface nestingParallel ("nested") regions of a Fermi surface (FS) drive instabilities of the electron fluid, for example, the spin density wave in elemental chromium. In one-dimensional materials, the FS is trivially fully nested (a single nesting vector ...