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Quantum transport in three-dimensional Weyl electron system
Yuya Ominato, Mikito Koshino
Quantum transport in three-dimensional massless Dirac electron system with long-range Gaussian impurities is studied theoretically using a self-consistent Born approximation (SCBA)…
Optical properties of the Hofstadter butterfly in the Moiré superlattice
Pilkyung Moon, Mikito Koshino
We investigate the optical absorption spectrum and the selection rule for the Hofstadter butterfly in twisted bilayer graphene under magnetic fields. We demonstrate that the absorp…
Electronic transmission through AB-BA domain boundary in bilayer graphene
Mikito Koshino
We study the electron transmission through the domain boundary on bilayer graphene separating AB and BA stacking regions. Using the effective continuum model, we calculate the elec…
Massive Dirac fermions and Hofstadter butterfly in a van der Waals heterostructure
B. Hunt, J. D. Sanchez-Yamagishi, A. F. Young +6
Van der Waals heterostructures comprise a new class of artificial materials formed by stacking atomically-thin planar crystals. Here, we demonstrate band structure engineering of a…
Optical Absorption in Twisted Bilayer Graphene
Pilkyung Moon, Mikito Koshino
We theoretically study the optical absorption property of twisted bilayer graphenes with various stacking geometries, and demonstrate that the spectroscopic characteristics serve a…
Orbital magnetism of graphene flakes
Yuya Ominato, Mikito Koshino
Orbital magnetism is studied for graphene flakes with various shapes and edge configurations using the tight-binding approximation. In the low-temperature regime where the thermal…