• 文献标题:   Edge states interferometry and spin rotations in zigzag graphene nanoribbons
  • 文献类型:   Article
  • 作  者:   USAJ G
  • 作者关键词:   electron spin polarisation, graphene, interferometry, nanostructured material, spin dynamic
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121
  • 通讯作者地址:   Comis Nacl Energia Atom
  • 被引频次:   6
  • DOI:   10.1103/PhysRevB.80.081414
  • 出版年:   2009

▎ 摘  要

An interesting property of zigzag graphene nanoribbons is the presence of edge states, extended along its borders but localized in the transverse direction. Here we show that because of this property, electron transport through an externally induced potential well displays two-path-interference oscillations when subjected either to a magnetic or a transverse electric field. This effect does not require the existence of an actual "hole" in the nanoribbon's geometry. Moreover, since edge states are spin polarized, having opposite polarization on opposite sides, such interference effect can be used to rotate the spin of the incident carriers in a controlled way.