Adina Luican-Mayer1
University of Ottawa1
In this talk we discuss scanning tunneling microscopy studies of ferroelectric domains at symmetry-broken interfaces of marginally twisted WS<sub>2 </sub> films. The analysis of the ferroelectric domain network can give detailed information about the deformations in the assembled layers and we demonstrate that one can achieve full control over the conditions for the redistribution of polarization across the domain network.<br/>We discuss two characteristic regimes of domain evolutions: approximately equilateral triangular stacking order domains featuring partial dislocation at the domain boundary, and elongated triangular domain in which the primary domain walls merge, achieving perfect screw dislocation. The domain geometry was found to be well described by a simple string-like model, allowing for parameter-free prediction of domain wall shapes and lengths in the elongated triangle regime.