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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2008
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/0804.4271 |
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| _version_ | 1866909776881909760 |
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| author | Zheng, Fawei Zhou, Gang Liu, Zhirong Wu, Jian Duan, Wenhui Gu, Bing-Lin Zhang, S. B. |
| author_facet | Zheng, Fawei Zhou, Gang Liu, Zhirong Wu, Jian Duan, Wenhui Gu, Bing-Lin Zhang, S. B. |
| contents | First-principles calculations reveal half metallicity in zigzag boron nitride (BN) nanoribbons (ZBNNRs). When the B edge, but not the N edge, of the ZBNNR is passivated, despite being a pure $sp$-electron system, the ribbon shows a giant spin splitting. The electrons at the Fermi level are 100% spin polarized with a half-metal gap of 0.38 eV and its conductivity is dominated by metallic single-spin states. The two states across at the Dirac point have different molecular origins, which signals a switch of carrier velocity. The ZBNNR should be a good potential candidate for widegap spintronics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_0804_4271 |
| institution | arXiv |
| publishDate | 2008 |
| record_format | arxiv |
| spellingShingle | Prediction of Half Metallicity along the Edge of Boron Nitride Zigzag Nanoribbons Zheng, Fawei Zhou, Gang Liu, Zhirong Wu, Jian Duan, Wenhui Gu, Bing-Lin Zhang, S. B. Materials Science Disordered Systems and Neural Networks First-principles calculations reveal half metallicity in zigzag boron nitride (BN) nanoribbons (ZBNNRs). When the B edge, but not the N edge, of the ZBNNR is passivated, despite being a pure $sp$-electron system, the ribbon shows a giant spin splitting. The electrons at the Fermi level are 100% spin polarized with a half-metal gap of 0.38 eV and its conductivity is dominated by metallic single-spin states. The two states across at the Dirac point have different molecular origins, which signals a switch of carrier velocity. The ZBNNR should be a good potential candidate for widegap spintronics. |
| title | Prediction of Half Metallicity along the Edge of Boron Nitride Zigzag Nanoribbons |
| topic | Materials Science Disordered Systems and Neural Networks |
| url | https://arxiv.org/abs/0804.4271 |