Magnetic Boron Nitride Nanoribbons with Tunable Electronic Properties
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- 作者：Veronica Barone ; Juan E. Peralta
- 刊名：Nano Letters
- 出版年：2008
- 出版时间：August 2008
- 年：2008
- 卷：8
- 期：8
- 页码：2210-2214
- 全文大小：325K
- 年卷期：v.8,no.8(August 2008)
- ISSN：1530-6992
文摘
We present theoretical evidence, based on total-energy first-principles calculations, of the existence of spin-polarized states well localized at and extended along the edges of bare zigzag boron nitride nanoribbons. Our calculations predict that all the magnetic configurations studied in this work are thermally accessible at room temperature and present an energy gap. In particular, we show that the high spin state, with a magnetic moment of 1 μB at each edge atom, presents a rich spectrum of electronic behaviors as it can be controlled by applying an external electric field in order to obtain metallic ↔ semiconducting ↔ half-metallic transitions.