[8p-A33-1~7] 17.2 Fundamental properties

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-A33-2] Electric-Field Effect of Moiré Superlattices in Twisted Trilayer Transition Metal Dichalcogenides

〇Aki Aizawa¹, Naoto Nakatsuji², Takashi Taniguchi³, Kenji Watanabe³, Hao Ou¹, Jiang Pu¹ (1.Science Tokyo Univ., 2.Stony Brook Univ., 3.NIMS)

Keywords:

2D material,Sliding ferroelectricity

In moiré superlattices formed by stacking transition metal dichalcogenides (TMDCs), sliding ferroelectricity emerges from the movement of domain walls (DWs). To achieve advanced control of this property, this study focuses on trilayer moiré superlattices where different periodicities overlap. Experimental observations of DW dynamics during vertical electric field sweeps using C-AFM revealed discontinuous behavior, which is clearly distinct from that in bilayer systems. Continuum model simulations demonstrated that this peculiar behavior originates from DW pinning caused by the short-period moiré potential.