358 citations · 1k across the 15 of their papers we have counts for
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Quantum oscillations in diamond field effect transistors with a h-BN gate dielectric
Yosuke Sasama, Katsuyoshi Komatsu, Satoshi Moriyama +8
Diamond has attracted attention as a next-generation semiconductor because of its various exceptional properties such as a wide bandgap and high breakdown electric field. Diamond f…
Topological Valley Currents in Bilayer Graphene/Hexagonal Boron Nitride Superlattices
Kosuke Endo, Katsuyoshi Komatsu, Takuya Iwasaki +8
Graphene superlattices have recently been attracting growing interest as an emergent class of quantum metamaterials. In this paper, we report the observation of nonlocal transport…
Fabry-Pérot resonances and a crossover to the quantum Hall regime in ballistic graphene quantum point contacts
Nurul Fariha Ahmad, Katsuyoshi Komatsu, Takuya Iwasaki +8
We report on the observation of quantum transport and interference in a graphene device that is attached with a pair of split gates to form an electrostatically-defined quantum poi…
Observation of superconductivity in bilayer graphene/hexagonal boron nitride superlattices
Satoshi Moriyama, Yoshifumi Morita, Katsuyoshi Komatsu +9
A class of low-dimensional superconductivity (SC), such as most of "atomic-layer" SCs, has survived only under certain circumstances, implying a role of the substrate. Moreover, in…