Half metallicity along the edge of zigzag boron nitride nanoribbons
- 11 November 2008
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 78 (20), 205415
- https://doi.org/10.1103/physrevb.78.205415
Abstract
First-principles calculations within the local spin-density approximation reveal half metallicity in zigzag boron nitride nanoribbons (ZBNNRs). When the B edge, but not the N edge, of the ZBNNR is passivated, despite being a pure -electron system, the ribbon shows a giant spin splitting. The electrons at the Fermi level are 100% spin polarized with a half-metal gap of 0.38 eV and its conductivity is dominated by metallic single-spin states. The two states crossing at the Dirac point have different molecular origins, which signal a switch of carrier velocity. The ZBNNR should be a good potential candidate for wide gap spintronics.
Keywords
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