[10p-N306-1~18] 17.2 Graphene

[10p-N306-5] Cyclotron resonance absorption in twisted bilayer graphene

〇Momoko Onodera¹, Yuta Seo¹, Satoru Masubuchi¹, Rai Moriya¹, Kenji Watanabe², Takashi Taniguchi^2,1, Mikito Koshino³, Tomoki Machida^1,4 (1.IIS, Univ. of Tokyo, 2.NIMS, 3.Osaka Univ., 4.CREST-JST)

Keywords:graphene, van der Waals heterostructure, cyclotron resonance

We measured cyclotron resonance in twisted bilayer graphene (tBLG) with the twist angle θ = 2.0 deg. Under mind-infrared light irradiation, the device showed large photovoltage at the sub-Dirac point under zero magnetic field. Next, we applied perpendicular magnetic field and observed multiple photovoltage peaks. These observations reflect the Landau levels in tBLG.