Compared with electronic phase transitions, structural phase transitions of crystals are
challenging to control owing to the energy cost of breaking dense solid bonds. Recently …

Ferroelectric and two-dimensional (2D) materials are both heavily investigated classes of
electronic materials. This is unsurprising since they both have superlative fundamental …

Interfacial ferroelectricity, prevalent in various parallel-stacked layered materials, allows
switching of out-of-plane ferroelectric order by in-plane sliding of adjacent layers. Its …

Moiré superlattice of twisted hexagonal boron nitride (hBN) has emerged as an advanced
atomically thin van der Waals interfacial ferroelectricity platform. Nanoscale periodic …

Expanding the performance of field-effect devices is a key challenge of the ever-growing
chip industry at the core of current technologies. Non-volatile multiferroic transistors that …

When two BN layers are stacked in parallel in an AB or BA arrangement, a spontaneous out-
of-plane electric polarization arises due to charge transfer in the out-of-plane B–N bonds …

Transition metal dichalcogenides (TMDs) with rhombohedral (3R) stacking order are
excellent platforms to realize multiferroelectricity. In this work, we demonstrate the electrical …

Compared to electronic phase transitions, structural phase transitions of crystals are
challenging to control due to the energy cost of breaking dense solid bonds. Recently …

For two-dimensional (2D) polar semiconductors with out-of-plane polarization, as the
number of stacked layers increases, the electronic properties could change from single-layer …

In spite of the interest in the two-dimensional electron gases (2DEGs) experimentally found
at surfaces and interfaces, important uncertainties remain about the observed insulator …