Highly Tunable Moiré Proximity System in Twisted Hexagonal Boron Nitrides Heterostructure
Kwanghee Han
Kyung Hee University – Seoul, Republic of Korea & City College of New York – New York, New York, USA
_______________________________________
Moiré superlattice in twisted van der Waals materials have emerged as a promising platform for emulating strongly correlated physics due to the tunability of many-body interactions via external stimuli such as gate, strain, and twist angle. In the twisted Hexagonal Boron Nitrides (hBN) heterostructure with a small-angle mismatch, nanoscale ferroelectric domains are formed due to their dipole polarization difference and minimize the interlayer configurations energy. Here, we report various types of moiré potentials such as the quasi 1-dimensional moiré structure and cumulative moiré superlattice. In addition, we introduce an approach for programming the moiré potential using femtosecond laser. Furthermore, we confirm the moiré proximity effect using Kelvin Probe Force Microscopy (KPFM) even after transferring monolayer MoSe2. The twisted hBN platform could pave the way for remote engineering of moiré potentials on demand and use it for Hamiltonian simulators.
Email: kwangheehan@khu.ac.kr