125 citations · 592 across the 11 of their papers we have counts for
11 papers
Imaging bulk and edge transport near the Dirac point in graphene moiré superlattices
Ziwei Dou, Sei Morikawa, Alessandro Cresti +9
Van der Waals structures formed by aligning monolayer graphene with insulating layers of hexagonal boron nitride exhibit a moiré superlattice that is expected to break sublattice s…
Inter-subband Landau level couplings induced by in-plane magnetic fields in trilayer graphene
Yuta Asakawa, Satoru Masubuchi, Naoko Inoue +4
We observed broken-symmetry quantum Hall effects and level crossings between spin- and valley- resolved Landau levels (LLs) in Bernal stacked trilayer graphene. When the magnetic f…
Dirac fermion reflector by ballistic graphene sawtooth-shaped npn junctions
Sei Morikawa, Quentin Wilmart, Satoru Masubuchi +4
We have realized a Dirac fermion reflector in graphene by controlling the ballistic carrier trajectory in a sawtooth-shaped npn junction. When the carrier density in the inner p-re…
Imaging ballistic carrier trajectories in graphene using scanning gate microscopy
Sei Morikawa, Ziwei Dou, Shu-Wei Wang +6
We use scanning gate microscopy to map out the trajectories of ballistic carriers in high-mobility graphene encapsulated by hexagonal boron nitride and subject to a weak magnetic f…
Electric field modulation of Schottky barrier height in graphene/MoSe2 van der Waals heterointerface
Yohta Sata, Rai Moriya, Sei Morikawa +3
We demonstrate a vertical field-effect transistor based on a graphene/MoSe2 van der Waals (vdW) heterostructure. The vdW interface between the graphene and MoSe2 exhibits a Schottk…
Influence of the density of states of graphene on the transport properties of graphene/MoS2/metal vertical field-effect transistors
Rai Moriya, Takehiro Yamaguchi, Yoshihisa Inoue +4
We performed detailed studies of the current-voltage characteristics in graphene/MoS2/metal vertical field-effect transistors. Owing to its low density of states, the Fermi level i…