While monolayer graphene (MLG) is a zero-gap system, Bernal-stacked bilayer graphene (BLG) acquires a finite band gap when the symmetry between the layers' potential energy is broken, usually, via a displacement electric field applied in double-gate devices. Here, we introduce a twistronic ...
Imaging topological and correlated insulating states in twisted monolayer-bilayer graphene. Nat. Commun. 13, 4225 (2022). Article CAS PubMed PubMed Central Google Scholar Kerelsky, A. et al. Maximized electron interactions at the magic angle in twisted bilayer graphene. Nature 572, 95–100 (...
Superconductors, orbital magnets and correlated states in magic-angle bilayer graphene. Nature 574, 653–657 (2019). Article CAS Google Scholar Xu, S. et al. Tunable van hove singularities and correlated states in twisted monolayer–bilayer graphene. Nat. Phys. 17, 619–626 (2021). Article ...
Twisted stacking of van der Waals materials introduces a new way in band-structure engineering and has given rise to numerous extraordinary physical phenomena. Despite the absence of second harmonic generation (SHG) in non-gated monolayer graphene, artificially twisted bilayer graphene (tBLG) possesses...
I. Generic miniband structure of graphene on a hexagonal substrate. Phys. Rev. B 87, 245408 (2013). Google Scholar Mucha-Kruczyński, M., Wallbank, J. R. & Fal’ko, V. I. Heterostructures of bilayer graphene and h-BN: Interplay between misalignment, interlayer asymmetry, and trigonal...
We have investigated experimentally the thermal conductivity of suspended twisted bilayer graphene. The measurements were performed using an optothermal Raman technique. It was found that the thermal conductivity of twisted bilayer graphene is lower than that of monolayer graphene and the reference, Bernal...
(111) film and investigate the electronic structure by angle-resolved photoemission spectroscopy.Compared with other substrates,our TBG with a wafer scale is acquired with a shorter growth time.The Fermi velocity and energy gap of Dirac cones of TBG are comparable with those of a monolayer on Cu...
For instance, similar replica flat bands may emerge in superconducting magic-angle twisted trilayer graphene49, whereas they may be absent in non-superconducting twisted monolayer–bilayer graphene50. Furthermore, we expect that the distinctive capabilities of μ-ARPES (and more advanced nano-ARPES) ...
For bilayer graphene where the two layers are twisted by the ‘magic angle’, flat band and strong many-body effects lead to correlated insulating states and superconductivity4,5,6,7. In contrast to monolayer graphene, the band structure of untwisted bilayer graphene can be further tuned by a...
The as-prepared tBLG with strong light-matter interaction was further fabricated into high-performance photodetectors with selectively enhanced photocurrent generation (up to 6 times compared with monolayer in our device). 展开 关键词: photocurrent enhancement van Hove singularity interlayer coupling ...