• 文献标题:   Intrinsic plasmarons in warm graphene
  • 文献类型:   Article
  • 作  者:   LIU DQ, CHEN SY, ZHANG SL, MA N
  • 作者关键词:   intrinsic plasmaron, graphene, landau damping
  • 出版物名称:   JOURNAL OF PHYSICSCONDENSED MATTER
  • ISSN:   0953-8984 EI 1361-648X
  • 通讯作者地址:   Changzhou Univ
  • 被引频次:   1
  • DOI:   10.1088/1361-648X/aa81ad
  • 出版年:   2017

▎ 摘  要

Based on a self-consistent method, we predict theoretically that there exist intrinsic plasmarons in graphene at nonzero temperature, with a well defined mode, as shown by the result of Landau damping. We find that there are sharp differences between the discussed system and the QCD/QED system. Firstly, the thermal mass is proportional to alpha(3/4)(g) gT but not alpha T-g. Secondly, at 0 < q < q(c), the fermion channel and plasmaron channel are nearly degenerate, and furthermore the energy difference between fermion and plasmaron becomes larger and larger with increasing q in the region q > q(c). Thirdly, the fermion behaves as a 'relativistic particle' with nonzero mass, and the plasmaron exhibits an abnormal dispersion at moderate momentum.