Edge States of Zigzag Boron Nitride Nanoribbons
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概要
- 論文の詳細を見る
Tight-binding (TB) calculation for zigzag boron nitride nanoribbons (ZBNNRs) is presented. The TB parameters are obtained so as to reproduce density functional calculation. The analytical expressions of boron (nitrogen) edge states that lie near the bottom (top) of conductance (valence) bands are given. The modification of the potential near the edge is found to be important in explaining the small energy dispersion of the edge states. The energy band gap of ZBNNR decreases with increasing ribbon width, which is explained by the edge potential. We also discuss the half metallicity for ZBNNR by considering the Hubbard-type Coulomb interaction.
- Physical Society of Japanの論文
- 2009-07-15
著者
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Duan Wenhui
Center For Advanced Study And Department Of Physics Tsinghua University
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Gu Bing-lin
Center For Advanced Study And Department Of Physics Tsinghua University
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Saito Riichiro
Department Of Electronic Engineering University Of Electro-communications
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Zheng Fawei
Department Of Physics Tohoku University
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Sasaki Ken-ichi
Department Of Chemistry Faculty Of Science Hiroshima University
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Saito Riichiro
Department of Physics, Tohoku University, Sendai 980-8578
-
Gu Bing-Lin
Center for Advanced Study and Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China
-
Duan Wenhui
Center for Advanced Study and Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China
-
Zheng Fawei
Department of Physics, Tohoku University, Sendai 980-8578
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