The structural and electronic properties of twisted bilayer graphene (TBG) on SiC(000) grown by Si flux-assisted molecular beam epitaxy were investigated using scanning tunneling microscopy (STM) and angle-resolved photoelectron spectroscopy with nanometric spatial resolution. STM images revealed a wide ...
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 ...
| 近日,上海科技大学物质科学与技术学院拓扑物理实验室陈宇林-陈成团队利用纳米角分辨光电子能谱(Nano-ARPES)技术,发现了超导魔角石墨烯中显著的谷间-电声子耦合效应,并且确定了相应的声子模式。相关研究成果以“Strong Electron-Phonon Coupling in Magic-Angle Twisted Bilayer Graphene ”(双层魔角石墨烯中的强电子-...
Selection rules and interference effects in angle resolved photoemission spectra from twisted graphene bilayers are studied within a long wavelength theory for the electronic structure. Using a generic model for the interlayer coupling, we identify features in the calculated ARPES momentum distributions ...
The results demonstrate how the energy- and polarization-dependence of ARPES spectra can be used to characterize the interlayer coupling in twisted bilayer graphenes.PalDepartment of Physics and AstronomyAnshumanDepartment of Physics and AstronomyMele...
We theoretically investigate the trARPES (time-resolved ARPES) spectrum and optical Hall conductivity in periodically driven twisted bilayer graphene, considering both steady-state and "projected" occupations of the Floquet state. In periodically driven prethermalized systems, steady-state occupation of ...
Also, the band structure generated for extremely large supercell is difficult to compare directly with experimental ARPES data which usually acquired for conventional graphene Brillouin zone (BZ), not the folded supercell BZ. Here, we report direct TB calculations using atomistic Slater-Koster approach...
Here we report the experimental observation of field-tunable dichotomic electronic structure of tMBG by nanospot angle-resolved photoemission spectroscopy (NanoARPES) with operando gating. Interestingly, selective enhancement of the relative spectral weight contributions from monolayer and bilayer graphene is ...
Nano-ARPES investigation of structural relaxation in small angle twisted bilayer tungsten disulfidedoi:10.1103/PhysRevMaterials.8.124004The diverse and intriguing phenomena observed in twisted bilayer systems, such as graphene and transition-metal dichalcogenides, prompted new questions about the emergent ...
nanoARPEStwisted bilayer graphenevan der Waals heterostructuresvan Hove singularitysThe possibility of triggering correlated phenomena by placing a singularity of the density of states near the Fermi energy remains an intriguing avenue towards engineering the properties of quantum materials. Twisted bilayer ...