• 文献标题:   Effective mass of electron in monolayer graphene: Electron-phonon interaction
  • 文献类型:   Article
  • 作  者:   TIRAS E, ARDALI S, TIRAS T, ARSLAN E, CAKMAKYAPAN S, KAZAR O, HASSAN J, JANZEN E, OZBAY E
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF APPLIED PHYSICS
  • ISSN:   0021-8979 EI 1089-7550
  • 通讯作者地址:   Anadolu Univ
  • 被引频次:   29
  • DOI:   10.1063/1.4789385
  • 出版年:   2013

▎ 摘  要

Shubnikov-de Haas (SdH) and Hall effect measurements performed in a temperature range between 1.8 and 275 K, at an electric field up to 35 kV m(-1) and magnetic fields up to 11 T, have been used to investigate the electronic transport properties of monolayer graphene on SiC substrate. The number of layers was determined by the use of the Raman spectroscopy. The carrier density and in-plane effective mass of electrons have been obtained from the periods and temperature dependencies of the amplitude of the SdH oscillations, respectively. The effective mass is in good agreement with the current results in the literature. The two-dimensional (2D) electron energy relaxations in monolayer graphene were also investigated experimentally. The electron temperature (T-e) of hot electrons was obtained from the lattice temperature (T-L) and the applied electric field dependencies of the amplitude of SdH oscillations. The experimental results for the electron temperature dependence of power loss indicate that the energy relaxation of electrons is due to acoustic phonon emission via mixed unscreened piezoelectric interaction and deformation-potential scattering. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789385]