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Novel Electronic States in Graphene Ribbons -Competing Spin and Charge Orders-
Atsushi Yamashiro, Yukihiro Shimoi, Kikuo Harigaya +1
In a nanographene ring with zigzag edges, the spin-polarized state and the charge-polarized state are stabilized by the on-site and the nearest neighbor Coulomb repulsions, U and V…
Competition between spin and charge polarized states in nanographene ribbons with zigzag edges
Atsushi Yamashiro, Yukihiro Shimoi, Kikuo Harigaya +1
Effects of the nearest neighbor Coulomb interaction on nanographene ribbons with zigzag edges are investigated using the extended Hubbard model within the unrestricted Hartree-Fock…
Theoretical study on novel electronic properties in nanographite materials
Kikuo Harigaya, Atsushi Yamashiro, Yukihiro Shimoi +8
Antiferromagnetism in stacked nanographite is investigated with using the Hubbard-type model. We find that the open shell electronic structure can be an origin of the decreasing ma…