TY - JOUR
T1 - Half metallicity along the edge of zigzag boron nitride nanoribbons
AU - Zheng, Fawei
AU - Zhou, Gang
AU - Liu, Zhirong
AU - Wu, Jian
AU - Duan, Wenhui
AU - Gu, Bing Lin
AU - Zhang, S. B.
PY - 2008/11/11
Y1 - 2008/11/11
N2 - 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 sp -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.
AB - 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 sp -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.
UR - http://www.scopus.com/inward/record.url?scp=57149132134&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.78.205415
DO - 10.1103/PhysRevB.78.205415
M3 - Article
AN - SCOPUS:57149132134
SN - 1098-0121
VL - 78
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 20
M1 - 205415
ER -