One-dimensional Cr2NO2 nanoribbons cut from the oxygen-passivated Cr2NO2 MXene were investigated by using density functional theory. The wide nanoribbons have ferromagnetic ground states and are intrinsic half-metals,...One-dimensional Cr2NO2 nanoribbons cut from the oxygen-passivated Cr2NO2 MXene were investigated by using density functional theory. The wide nanoribbons have ferromagnetic ground states and are intrinsic half-metals, independent of their chirality. The half-metallic band gaps of wide nanoribbons are larger than 1 eV, which are large enough for avoiding thermally activated spin flip. The magnetism does not rely on the edge states but originates from all the Cr atoms. Furthermore, the half-metallicity is still robust in an electronic device even if the bias is up to 1 V. Therefore, one-dimensional Cr2NO2 nanoribbons are good candidates for spintronics.展开更多
基金supported by the National Natural Science Foundation of China(No.21203127)the Scientific Research Base Development Program of the Beijing Municipal Commission of Education
文摘One-dimensional Cr2NO2 nanoribbons cut from the oxygen-passivated Cr2NO2 MXene were investigated by using density functional theory. The wide nanoribbons have ferromagnetic ground states and are intrinsic half-metals, independent of their chirality. The half-metallic band gaps of wide nanoribbons are larger than 1 eV, which are large enough for avoiding thermally activated spin flip. The magnetism does not rely on the edge states but originates from all the Cr atoms. Furthermore, the half-metallicity is still robust in an electronic device even if the bias is up to 1 V. Therefore, one-dimensional Cr2NO2 nanoribbons are good candidates for spintronics.
