The 67th JSAP Spring Meeting 2020

Presentation information

Poster presentation

17 Nanocarbon Technology » 17 Nanocarbon Technology(Poster)

[12a-PA2-1~77] 17 Nanocarbon Technology

Thu. Mar 12, 2020 9:30 AM - 11:30 AM PA2 (PA)

9:30 AM - 11:30 AM

[12a-PA2-33] Terahertz emission from graphene due to Landau-level optical transition

Gen Ueda1, Hirokazu Murano1, Kazuhiro Takizawa1, Maki Otuji1, Kenji Ikushima1, Sunmi Kim2, Mikhail Patrashin3, Iwao Hosako3, Susumu Komiyama3,4 (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 (LLs) are formed under a high magnetic field in graphene. The purpose of this work is to detect Terahertz emission through the LL optical transition and to understand nonequilibrium carrier dynamics in current biased conditions. In this talk, we discuss the relationship between the applied electric power and emission intensity in a standard Hall bar sample.