Two-Dimensional Hexagonal Beryllium Sulfide Crystal
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- 作者：Jin Yu ; Wanlin Guo
- 刊名：The Journal of Physical Chemistry Letters
- 出版年：2013
- 出版时间：June 6, 2013
- 年：2013
- 卷：4
- 期：11
- 页码：1856-1860
- 全文大小：356K
- 年卷期：v.4,no.11(June 6, 2013)
- ISSN：1948-7185
文摘
We report a new two-dimensional hexagonal beryllium sulfide (h-BeS) sheet with exceptional properties by extensive first-principles calculations. The h-BeS sheet presents an indirect energy gap of 4.26 eV and an outstanding thermodynamic stability up to 1000 K. Armchair-edged nanoribbons of h-BeS are wide-energy-gap semiconductors with a giant Stark effect, while the zigzag-edged ones are metals with spin glass state. Especially, the ferromagnetic zigzag nanoribbons exhibit a net magnetic moment of nearly 1.15 渭B. These interesting electronic and magnetic properties suggest the promise of the h-BeS crystal for potential applications and should inspire experimental enthusiasm.