期刊
PHYSICAL REVIEW B
卷 92, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.92.205429
关键词
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资金
- MOST [2011CB921702, 2011CB808401]
- NSFC [61390501, 51210003, 51325204]
- Collaborative Innovation Center of Quantum Matter of China
- McMinn Endowment
- National Science Foundation [ACI-1053575]
Ferromagnetism in half-metallic two-dimensional materials can lead to unique spintronics applications. Here we report first-principles calculations that predict monolayer graphyne nanoribbons (GyNRs), an alternative to graphene, doped randomly with 3d-series transition metal atoms at medium-to-high concentrations (2%-5%) can be ferromagnetic (FM). Furthermore, Mn- and Co-doped GyNRs are half-metallic with 100% spin polarization at the Fermi level and can act as perfect spin filters. The high spin polarization of the current is preserved up to large bias voltages. This study provides a basis for the fabrication of GyNRs with ferromagnetism and spin-polarized electron transport properties.
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