講演情報
[20p-A602-1][JSAP-Optica Joint Symposia 2023 Invited Talk] Direct observation of electronic structures in atomically thin flakes by using micro-focused angle-resolved photoemission spectroscopy
〇Masato Sakano1 (1.The Univ. of Tokyo)
キーワード：
2D materials、Micro-focused angle-resolved photoemission spectroscopy
The physical properties of two-dimensional (2D) materials drastically change as the number of layers decreases towards the monolayer limit. The quantization of band dispersions along the stacking direction, as well as the reduction of symmetry compared to the infinite bulk crystal, can significantly modify the electronic structures of 2D materials, resulting in peculiar physical phenomena. Moreover, in van der Waals heterostructures stacked by 2D materials, physical properties that cannot be realized in the 2D materials alone can emerge. In our study, we have successfully developed a sample fabricating procedure for atomically-thin 2D flakes suitable for angle-resolved photoemission spectroscopy. This enables us to directly observe the electronic band structures in complex materials for which first-principles computational predictions are challenging. In my presentation, I will introduce recent studies of the observed electronic structures in 2D materials and their stacked materials.