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. ...
Since the discovery of superconductivity and correlated insulating states in magic-angle twisted bilayer graphene (MATBG)1,2, twisted van der Waals materials have become indispensable for the design of novel quantum materials at will3. In the quickly developing field of twistronics4, tremendous theo...
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...
Unified description of the dc conductivity of monolayer and bilayer graphene at finite densities based on resonant scatterers resonantscatterersWe show that a coherent picture of the dc conductivity of monolayer and bilayer graphene at finite electronic densities emerges upon ......
STM Study of Twisted Bilayer GrapheneIn the 1980s, the invention of scanning tunneling microscope (STM) opened the door to observe the world from the atomic scale. For STM, good resolution is considered to be 0.1nm lateral resolution andoi:10.1007/978-981-10-5181-4_3Mengxi Liu...
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 ...
this new paradigm is magic-angle twisted bilayer graphene (MATBG), where two atomically thin sheets of carbon, twisted to exactly 1.1 degrees relative to one another, hosts correlated insulating, magnetic topological, and unconventional superconducting states, none of which are found in graphene ...