• 文献标题:   Electronic and thermoelectric transport properties for a zigzag graphene-silicene-graphene heterojunction modulated by external field
  • 文献类型:   Article
  • 作  者:   ZHOU BH, ZHOU BL, ZENG YS, ZHOU GH, DUAN MY
  • 作者关键词:   transmission coefficient, charge seebeck coefficient, spinorbit coupling, perpendicular electric field, zsinr, negf
  • 出版物名称:   PHYSICS LETTERS A
  • ISSN:   0375-9601 EI 1873-2429
  • 通讯作者地址:   Shaoyang Univ
  • 被引频次:   8
  • DOI:   10.1016/j.physleta.2016.02.014
  • 出版年:   2016

▎ 摘  要

we investigate the electronic and thermoelectric transport properties for a graphene-silicene-graphene (GSG) heterojunction with zigzag-edge nanoribbons under the modulation of the effective spin-orbit coupling (SOC) and potential energy. Using the nonequilibrium Green's function method, it is demonstrated that both the transmission coefficient T and the charge Seebeck coefficient S-C display the oscillatory behavior and can be effectively modulated by effective SOC lambda(SO) and the potential energy V-0. Furthermore, the even-odd difference in transport and thermoelectric properties disappears in the GSG heterojunction. Additionally, the dependence of the transmission coefficient and the charge Seebeck coefficient on Anderson disorder strength has been studied. (c) 2016 Elsevier B.V. All rights reserved.