• 文献标题:   Spin transport properties of a carbon nanotube/zigzag graphene nanoribbon junction: a first principles investigation
  • 文献类型:   Article
  • 作  者:   YU HP, ZHENG JM, GUO P, ZHANG ZY
  • 作者关键词:  
  • 出版物名称:   APPLIED PHYSICS AMATERIALS SCIENCE PROCESSING
  • ISSN:   0947-8396 EI 1432-0630
  • 通讯作者地址:   NW Univ Xian
  • 被引频次:   1
  • DOI:   10.1007/s00339-014-8641-7
  • 出版年:   2014

▎ 摘  要

A carbon nanotube (CNT)/zigzag graphene nanoribbons (ZGNRs) junctions has been proposed and investigated by first-principles calculations. The results show that large spin polarization of currents would be achieved when only one edge of ZGNR is coupled to the other lead. By virtue of spatial separation of edge state in two spin channel, one of those channels is opened at certain energy range and gives rise to spin-polarized currents under a low bias. This feature is stable whenever the ZGNR lead is under the antiferromagnetic ground states or is under the ferromagnetic states. Our findings indicate that this approach is simple and efficient for spintronics design.