Starting with twisted bilayer graphene, graphene-based moir\'e materials have recently been established as a new platform for studying strong electron correlations. In this paper, we study graphene monolayers on trilayer and demonstrate that system can host flat bands when the twist angle is close to magic-angle of 1.16$^\circ$. When monolayer ABA are not isolated, but intersected by Dirac cone...

Ni incorporation has been studied in a comprehensive range of Zn/Co-based magnetic oxides to elucidate it valence state and lattice incorporation. The resulting structural properties are detail. To the one end incorporated by in-diffusion as well reactive magnetron co-sputtering wurtzite ZnO where only Ni-diffused exhibits significant conductivity. This is complemented Co codoping leading. othe...

GaFeO3-type oxides are promising multiferroic materials due to the coexistence of spontaneous magnetization and ferroelectric polarization properties at room temperature. As these ferroic feature a large anisotropy, single crystals required. However, remains low In this study, we largely enhanced temperature by increasing Fe content co-doping Sc3+ Al3+. Single AlxSc0.1−xGa0.6Fe1.3O3 (x = 0.01–0...