Spin gapless armchair graphene nanoribbons under magnetic field and uniaxial strain |
| |
| Authors: | Hou Hai-Ping Xie Yue-E Chen Yuan-Ping Ouyang Tao Ge Qing-Xiaab and Zhong Jian-Xin |
| |
| Affiliation: | [1]Flunan Key Laboratory for Micro-Nano Energy Materials and Devices, Xiangtan University, Xiangtan 411105, China [2]Laboratory for Quantum Engineering and Micro-Nano Energy Technology and Faculty of Materials and Optoelectronic Physics, Xiangtan University, Xiangtan 411105, China |
| |
| Abstract: | Using Green's function method, we investigate the spin transport properties of armchair graphene nanoribbons (AGNRs) under magnetic field and uniaxial strain. Our results show that it is very difficult to transform narrow AGNRs directly from semiconductor to spin gapless semiconductors (SGS) by applying magnetic fields. However, as a uniaxial strain is exerted on the nanoribbons, the AGNRs can transform to SGS by a small magnetic field. The combination mode between magnetic field and uniaxial strain displays a nonmonotonic arch-pattern relationship. In addition, we find that the combination mode is associated with the widths of nanoribbons, which exhibits group behaviors. |
| |
| Keywords: | graphene spin gapless spin transport tight-binding |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
