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Electronic properties of metal induced gap states at insulator/metal interfaces -- dependence on the alkali halide and the possibility of excitonic mechanism of superconductivity
Ryotaro Arita, Yoshiaki Tanida, Kazuhiko Kuroki +1
Motivated from the experimental observation of metal induced gap states (MIGS) at insulator/metal interfaces by Kiguchi {\it et al.} [Phys. Rev. Lett. {\bf 90}, 196803 (2003)], we…
Flat-Band Ferromagnetism in Organic Polymers Designed by a Computer Simulation
Yuji Suwa, Ryotaro Arita, Kazuhiko Kuroki +1
By coupling a first-principles, spin-density functional calculation with an exact diagonalization study of the Hubbard model, we have searched over various functional groups for th…
Electronic structure of periodic curved surfaces -- continuous surface versus graphitic sponge
H. Aoki, M. Koshino, D. Takeda +2
We investigate the band structure of electrons bound on periodic curved surfaces. We have formulated Schrödinger's equation with the Weierstrass representation when the surface is…
Metal-Induced Gap States at Well Defined Alkali-Halide/Metal Interfaces
Manabu Kiguchi, Ryotaro Arita, Genki Yoshikawa +5
In order to search for states specific to insulator/metal interfaces, we have studied epitaxially grown interfaces with element-selective near edge X-ray absorption fine structure…