کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1544260 | 1512889 | 2014 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Half-metallicity of C/BN hybrid nanoribbons containing a topological defective interface Half-metallicity of C/BN hybrid nanoribbons containing a topological defective interface](/preview/png/1544260.png)
• Hybrid structures composing of armchair GNR and zigzag BNNR with an array of pentagons and heptagons.
• Half-metallic or semiconducting properties depend on the edge structure and ribbon width.
• Phase transition from ferromagnetic to anti-ferromagnetic states can be induced by applying uniaxial strain.
The electronic structures of novel C/BN hybrid nanoribbons constructed by joining an armchair graphene nanoribbon and a zigzag boron nitride nanoribbon with an array of pentagons and heptagons are investigated using first-principles calculations. We found that the electronic properties of these hybrid nanoribbons are sensitive to the edge structures. Robust ferromagnetism is formed at the N edges, whereas the boron-edged nanoribbons are semiconducting without spin-polarization. Half-metallicity can be achieved in the nitrogen-edged nanoribbons. Additionally, a ferromagnetism-antiferromagnetism transition takes place as a uniaxial external strain is applied to the nitrogen-edged nanoribbons. The tunable electronic structures, especially the half-metallicity of these C/BN hybrid nanoribbons are quite promising for the applications in spintronic devices.
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 60, June 2014, Pages 224–228