[17a-A35-1~9] 4.5 Nanocarbon and 2D Materials

10:30 〜 10:45英語発表

[17a-A35-5] Exciton-driven Floquet-Bloch States in 2D Semiconductors

Vivek Pareek¹, David Bacon¹, 〇(DC)XING ZHU¹, Yang-Hao Chan², Fabio Bussolotti³, Nicholas S Chan¹, Joel Perez Urquizo¹, Kenji Watanabe⁴, Takashi Taniguchi⁴, Michael K. L. Man¹, Julien Madeo¹, Diana Qiu⁵, Kuan Eng Johnson Goh^3,6,7, Felipe H. da Jornada^8,9, Keshav M. Dani¹ (1.FSU, OIST, 2.IAMS, Academia Sinica, 3.IMRE, A*STAR, 4.NIMS, 5.Yale Univ., 6.NUS, 7.NTU, 8.Stanford Univ., 9.SLAC)

キーワード：

2D semiconductors、Floquet engineering、ARPES

Floquet engineering, in which a temporal periodic drive breaks the continuous temporal symmetry and dynamically engineers the electronic structure, has attracted enormous attention in condensed matter physics. However, only a handful of studies have experimentally demonstrated Floquet effects driven by optical fields, which are limited by weak light-matter interactions. Meanwhile, theoretically it is predicted that an internal oscillating field, such as phonons and excitons, could also drive giant Floquet effects without the undesirable aspects of the optical case. In this talk, we will discuss the experimental observation of the Floquet-Bloch states induced by the excitons in 2D semiconductors.