Half metallicity along the edge of zigzag boron nitride nanoribbons

Fawei Zheng, Gang Zhou, Zhirong Liu, Jian Wu, Wenhui Duan*, Bing Lin Gu, S. B. Zhang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

248 引用 (Scopus)

摘要

First-principles calculations within the local spin-density approximation reveal half metallicity in zigzag boron nitride 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 crossing at the Dirac point have different molecular origins, which signal a switch of carrier velocity. The ZBNNR should be a good potential candidate for wide gap spintronics.

源语言英语
文章编号205415
期刊Physical Review B - Condensed Matter and Materials Physics
78
20
DOI
出版状态已出版 - 11 11月 2008
已对外发布

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