• 文献标题:   Landauer-Buttiker conductivity for spatially-dependent uniaxial strained armchair-terminated graphene nanoribbons
  • 文献类型:   Article
  • 作  者:   CHAMPO AE, ROMANTABOADA P, NAUMIS GG
  • 作者关键词:  
  • 出版物名称:   PHYSICA ELOWDIMENSIONAL SYSTEMS NANOSTRUCTURES
  • ISSN:   1386-9477 EI 1873-1759
  • 通讯作者地址:   Univ Nacl Autonoma Mexico
  • 被引频次:   3
  • DOI:   10.1016/j.physe.2018.05.001
  • 出版年:   2018

▎ 摘  要

The Landauer-Buttiker conductivity of arbitrary uniaxial spatially dependent strain in an armchair graphene nanoribbon is studied. Due to the uniaxial character of the strain, the corresponding transfer matrix can be reduced to a product of 2x2 matrices. Then the conductivity and the Fano factor can be calculated from this product. As an example of the technique, sinusoidal space dependent strain fields are studied using two different strain wavelengths. For the bigger wavelength the conductivity is reduced when compared with the unstrained case, although both conductivities are almost the same in shape. Whereas, for the smaller wavelength case, the conductivity is strongly modified. In spite of this, for energies close to the Dirac point energy, the conductivity and the Fano factor are quite similar to their unstrained counterpart for the two strain wavelengths here studied.