This is an update of a previous review (Naumis et al 2017 Rep. Prog. Phys. 80 096501).
Experimental and theoretical advances for straining graphene and other metallic, insulating …

Spontaneous electric polarization is recently observed in multilayered van der Waals
stacked materials, arising from a symmetry breaking in a unit cell with two or more …

Stacking orders provide a unique way to tune the properties of two-dimensional materials.
Recently, ABCB-stacked tetralayer graphene has been predicted to possess atypical …

In the classical model, ferroelectricity is associated with small ion displacements from
paraelectric phases with high symmetry, and ferroelectric crystals must adopt one of the ten …

Stacking two atomic layers together can induce interlayer (sliding) ferroelectricity that is
absent in their naturally occurring crystal forms. With the flexibility of two-dimensional …

Photodetectors are essential optoelectronic devices that play a critical role in modern
technology by converting optical signals into electrical signals, which are one of the most …

Intriguing “slidetronics” has been reported in van der Waals (vdW) layered non-
centrosymmetric materials and newly-emerging artificially-tuned twisted moiré superlattices …

Organic crystals are widely used by animals to manipulate light for producing structural
colors and for improving vision. To date only seven crystal types are known to be used, and …

Van der Waals polytypes of broken inversion and mirror symmetries have been recently
shown to exhibit switchable electric polarization even at the ultimate two‐layer thin limit …

The emergence of an intrinsic quantum anomalous Hall (QAH) insulator with long-range
magnetic order triggers unprecedented prosperity for combining topology and magnetism in …