[10a-Z28-1~13] 17.2 Graphene

[10a-Z28-2] Infrared emission from current-injected graphene under strong magnetic fields

〇Gen Ueda¹, Hirokazu Murano¹, Kazuhiro Takizawa¹, Kenji Ikushima¹, Sunmi Kim², Mikhail Patrashin³, Iwao Hosako³, Susumu Komiyama^3,4 (1.Tokyo Univ. of A & T, 2.IIS, Univ. of Tokyo, 3.NICT, 4.Dept. of Basic Science, Univ. of Tokyo)

Keywords:Graphene

Graphene exhibits a gapless linear band dispersion. Due to the unique band dispersion, unequally spaced Landau-levels and a zero-energy Landau-level are formed under a high magnetic field in graphene. The purpose of this work is to understand the magnetic-field and carrier-density dependence of infrared emission from graphene. In this talk, we discuss the origin of the emission on the basis of the experimental results.