321 citations · 540 across the 5 of their papers we have counts for
5 papers
Coulomb Blockade in Graphene Nanodisks
Motohiko Ezawa
Graphene nanodisk is a graphene derivative with a closed edge. The trigonal zigzag nanodisk with size has -fold degenerated zero-energy states. We investigate electron-elect…
Graphene Nanoribbon and Graphene Nanodisk
Motohiko Ezawa
We study electronic properties of graphene derivatives which have closed edges. They are finite-length graphene nanoribbons and graphene nanodisks. No metallic states are found in…
Intrinsic Zeeman Effect in Graphene
Motohiko Ezawa
The intrinsic Zeeman energy is precisely one half of the cyclotron energy for electrons in graphene. As a result a Landau-level mixing occurs to create the energy spectrum comprise…
Metallic Graphene Nanodisks
Motohiko Ezawa
We explore the electronic properties of finite-length graphene nanoribbons as well as graphene nanodisks with various sizes and shapes in quest of metallic ones. For this purpose i…
Peculiar Band Gap Structure of Graphene Nanoribbons
Motohiko Ezawa
Graphene nanoribbons are quasi-one-dimensional meterials with finite width. Characterizing a wide class of nanoribbons by edge shape and width, we make a systematic analysis of the…