Graphene and its bilayer are two-dimensional systems predicted to show exciting many-body effects near the neutrality point. The ideal tool to investigate spectrum reconstruction effects is angle-resolved photoemission spectroscopy (ARPES) as it probes directly the band structure with information about ...
Measurements of ARPES showed directly the variation of the electronic structure of BLG10–15, but such experiments have focused mostly on epitaxial graphene grown on SiC. In graphene grown on the Si-face of SiC, charge transfer between the substrate and graphene shifts the Fermi level (EF) ...
| 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-...
The electronic and optical response of Bernal stacked bilayer graphene with geometry modulation and gate voltage are studied. The broken symmetry in sublattices, one dimensional periodicity perpendicular to the domain wall and out-of-plane axis introduce
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 atomic-thick anticorrosion coating for copper (Cu) electrodes is essential for the miniaturisation in the semiconductor industry. Graphene has long been expected to be the ultimate anticorrosion material, however, its real anticorrosion performance i
Gate-dependent electronic structure of twisted monolayer-bilayer graphene revealed by ARPES angle twisted twistronic further exotic states and our understanding of correlated phenomena. the periodicity produced by the 1.1掳 twist between layers re... JE Nunn,A Mcellistrim,A Weston,... 被引量: 0...
Twisted bilayer graphene (tBLG) with van Hove Singularity (VHS) has exhibited novel twist-angle-dependent chemical and physical phenomena. However, scalable production of high-quality tBLG is still in its infancy, especially lacking the angle controlled preparation methods. Here, we report a facile...
The strength of the electron-phonon coupling (EPC) in graphite and graphene has been widely investigated using angle-resolved photoelectron spectroscopy (ARPES), however the interpretation of the results is not always straightforward7–13. For example the anisotropy of the EPC in alkali-metal ...
In this aligned sample, the graphene/hBN moiré potential and the resulting C2-symmetry-breaking have a profound influence on the electronic structure of pristine MATBG, as is discussed later. Flat-band replicas in superconducting MATBG In Fig. 2, we present ARPES data from two superconducting ...