Journal
JOURNAL OF APPLIED PHYSICS
Volume 110, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3619800
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Funding
- National Natural Science Foundation of China [10974119, 11075197, 11075097]
- Natural Science Fund for Distinguished Young Scholars of Shandong Province [JQ201001]
- Independent Innovation Foundation of Shandong University (IIFSDU) [2009JQ003]
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Using first principles calculations, we investigate the electronic and magnetic properties of BNC biribbons, a laterally-heterostructured nanoribbon constructed by joining a graphene nanoribbon (GNR) and a BN nanoribbon (BNNR) with zigzag edges. We find that the spin-polarization and electronic structures of the biribbons can be well-tuned by changing the width of the GNR, undergoing manifold transitions from semiconducting to half-metal and ferromagnetic metal. The critical points of GNR width to induce the transitions depend on the interface type (B/C or C/N) rather than the BNNR width. The ground states of metallic BNC biribbons are spin-polarized, forming non-zero magnetic moments. The tunable electronic structures and ferromagnetic ground states make the BNC biribbons promising candidate nanomaterials for building nanoscaled spintronic devices. (C) 2011 American Institute of Physics. [doi:10.1063/1.3619800]
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