[19a-S221-1~5] 日韓ジョイントシンポ：機能性２次元材料の現状と新展開

▲ [19a-S221-5] Selective deformation of monolayer MoS₂ by illuminating laser
and magnetotransport of 2D materials probed up to 60 T

〇Jhang Sung Ho¹、Kim Sung Won¹、Na Jeong Hyeon¹ (1.Konkuk Univ.)

キーワード：MoS2,transition metal dichalcogenide,deformation

2-dimensional transition metal dichalcogenide (TMDC) materials such as MoS₂ have attracted much research interest for future electronics and optoelectronics due to their unique electrical properties. The optical and electronic properties of TMDC can vary depending on the number of layers. In this presentation, we report one can thin down the thicker layers of TMDC by illuminating laser. And, for monolayer MoS₂, we could selectively deform the part of monolayer by using laser. The figure shown in the abstract presents a periodic modulation of the structure generated in the monolayer. We argue that the difference in the thermal expansion between substrate and the monolayer MoS₂ can give rise to the mechanical deformation when shining laser. This strain engineering might provide a useful tool with enhancing the performance of electronic and optoelectronic devices based on TMDC materials. In addition, if time allows, we will report the magneto-transport of 2D TMDC materials probed up 60 T.