Pore Symmetry Dependence of Band Gap of Nanoscale Periodic Porous Graphites with Differenet Pore Shapes.
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- Takeda Hiroyuki
- Department of Electronic Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565-0871, Japan
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- Kajii Hirotake
- Department of Electronic Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565-0871, Japan
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- Yoshino Katsumi
- Department of Electronic Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565-0871, Japan
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Abstract
The electronic energy states of nanoscale periodic porous graphites with different shapes of pores with acene and phenanthrene edge structures are theoretically studied using the two-dimensional (2D) tight-binding crystal orbital method in the framework of the Huckel approximation. The behaviors of the band gaps of the periodic porous graphite depend markedly not on the shape of pores but on the symmetry of the pores, and some of them for the periodic porous graphite with symmetric pores have the exact periodicity as a function of the separation between neighboring pores. Moreover, it has been originally thought that the separation of charge and spin in two dimensions (2D) cannot appear without transition metals; however, the appearance of the separation of charge and spin has been theoretically demonstrated in nanoscale periodic porous graphite with an odd number of atoms in the unit cell.
Journal
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 41 (6A), 3782-3786, 2002
The Japan Society of Applied Physics
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Details 詳細情報について
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- CRID
- 1390282681233547008
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- NII Article ID
- 210000051556
- 110004031268
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- NII Book ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL BIB ID
- 6195278
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed