• 文献标题:   Giant magnetoresistance in bilayer graphene nanoflakes
  • 文献类型:   Article
  • 作  者:   FARGHADAN R, FAREKIYAN M
  • 作者关键词:  
  • 出版物名称:   SOLID STATE COMMUNICATIONS
  • ISSN:   0038-1098 EI 1879-2766
  • 通讯作者地址:   Univ Kashan
  • 被引频次:   3
  • DOI:   10.1016/j.ssc.2016.05.011
  • 出版年:   2016

▎ 摘  要

Coherent spin transport through bilayer graphene (BLG) nanoflakes sandwiched between two electrodes made of single-layer zigzag graphene nanoribbon was investigated by means of Landauer-Buttiker formalism. Application of a magnetic field only on BLG structure as a channel produces a perfect spin polarization in a large energy region. Moreover, the conductance could be strongly modulated by magnetization of the zigzag edge of AB-stacked BLG, and the junction, entirely made of carbon, produces a giant magnetoresistance (GMR) up to 100%. Intestinally, GMR and spin polarization could be tuned by varying BLG width and length. Generally, MR in a AB-stacked BLG strongly increases (decreases) with length (width). (C) 2016 Elsevier Ltd. All rights reserved.