• 文献标题:   Hot electron relaxation and phonon dynamics in graphene
  • 文献类型:   Article
  • 作  者:   BUTSCHER S, MILDE F, HIRTSCHULZ M, MALIC E, KNORR A
  • 作者关键词:  
  • 出版物名称:   APPLIED PHYSICS LETTERS
  • ISSN:   0003-6951 EI 1077-3118
  • 通讯作者地址:   Tech Univ Berlin
  • 被引频次:   116
  • DOI:   10.1063/1.2809413
  • 出版年:   2007

▎ 摘  要

Using density-matrix theory, we microscopically calculate the relaxation dynamics of photoexcited electrons in graphene. Electron-phonon coupling leads to an initially ultrafast energy dissipation and to a nonthermal phonon occupation of the highest optical phonon modes. We also calculate the temporal evolution of the electronic temperature and find good agreement with recent experimental work. (c) 2007 American Institute of Physics.