Gaps induced by inversion symmetry breaking and second-generation dirac cones in graphene/hexagonal boron nitride. Nat. Phys. 12, 1111–1115 (2016). Article Google Scholar Razado-Colambo, I. et al. Nanoarpes of twisted bilayer graphene on sic: Absence of velocity renormalization for small ...
15Altmetric Metrics Abstract 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 ...
It can be mathematically proven that if we invert the top graphene layer through an arbitrary point in the middle plane, it cannot overlap with the bottom layer (Figure S17). Therefore, the bilayer structure lacks the inversion symmetry that is the case for tBLGs. The above proof and the ...
Twisted bilayer graphene (TBG) can host the moir茅 energy flat bands with twofold degeneracy serving as a fruitful playground for strong correlations and topological phases. However, the number of degeneracy is not limited to two. Introducing a spatially alternative magnetic field, we report that ...
The unusual properties of superconductivity in magic-angle twisted bilayer graphene (MATBG) have sparked considerable research interest1–13. However, despite the dedication of intensive experimental efforts and the proposal of several possible pairing m
Here, we utilize polarization-resolved photocurrent measurements to probe magic-angle twisted bilayer graphene, leveraging its sensitivity to the Berry connection that encompasses quantum "textures" of electron wavefunctions. Using terahertz light resonant with optical transitions of its flat bands, we ...
nonlinearhexagonalWe study the anomalous Hall effect, magneto-optical properties, and nonlinear optical properties of twisted bilayer graphene (TBG) aligned with hexagonal boron nitride (hBN) substrate as well as twisted double bilayer graphene systems. We show that non-vanishing valley polarizations in...
The magic-angle phenomenon of twisted bilayer graphene (tBG), i.e, the nontrivial topological flat bands with vanishing Fermi velocity at half filling, has aroused prominent attention on superconductivity, correlated insulators, orbital magnetism, etc. Several efforts have been made to unravel the ...
Charge inversion and topological phase transition at a twist angle induced van Hove singularity of bilayer graphene. Nano Lett. 16, 5053–5059 (2016). Article ADS CAS Google Scholar Girit, Ç. Ö. & Zettl, A. Soldering to a single atomic layer. Appl. Phys. Lett. 91, 193512 (2007)...
Many novel physical properties of twisted bilayer graphene have been discovered and studied successively, but the physical mechanism of the chiral modulation of BLG by a twisted angle lacks theoretical research. In this work, the density functional theory, the wavefunction analysis of the excited state...