Sliding van der Waals polytypes

M Vizner Stern, S Salleh Atri, M Ben Shalom - Nature Reviews Physics, 2024 - nature.com
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 …

2D Ferroelectrics and ferroelectrics with 2D: Materials and device prospects

C Leblanc, S Song, D Jariwala - Current Opinion in Solid State and …, 2024 - Elsevier
Ferroelectric and two-dimensional (2D) materials are both heavily investigated classes of
electronic materials. This is unsurprising since they both have superlative fundamental …

Polar and quasicrystal vortex observed in twisted-bilayer molybdenum disulfide

CS Tsang, X Zheng, T Yang, Z Yan, W Han, LW Wong… - Science, 2024 - science.org
We report the observation of an electric field in twisted-bilayer molybdenum disulfide (MoS2)
and elucidate its correlation with local polar domains using four-dimensional scanning …

Excitonic signatures of ferroelectric order in parallel-stacked MoS2

S Deb, J Krause, PE Faria Junior, MA Kempf… - Nature …, 2024 - nature.com
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 …

Ultrafast switching of sliding polarization and dynamical magnetic field in van der Waals bilayers induced by light

J Wang, X Li, X Ma, L Chen, JM Liu, CG Duan… - Physical Review Letters, 2024 - APS
Sliding ferroelectricity is a unique type of polarity recently observed in van der Waals
bilayers with a suitable stacking. However, electric-field control of sliding ferroelectricity is …

Stacking-engineered ferroelectricity and multiferroic order in van der Waals magnets

D Bennett, G Martínez-Carracedo, X He, J Ferrer… - Physical Review Letters, 2024 - APS
Two-dimensional (2D) materials that exhibit spontaneous magnetization, polarization, or
strain (referred to as ferroics) have the potential to revolutionize nanotechnology by …

Engineering interfacial polarization switching in van der Waals multilayers

M Van Winkle, N Dowlatshahi, N Khaloo, M Iyer… - Nature …, 2024 - nature.com
In conventional ferroelectric materials, polarization is an intrinsic property limited by bulk
crystallographic structure and symmetry. Recently, it has been demonstrated that polar order …

Engineering band structures of two-dimensional materials with remote moiré ferroelectricity

J Ding, H **ang, W Zhou, N Liu, Q Chen, X Fang… - Nature …, 2024 - nature.com
The stacking order and twist angle provide abundant opportunities for engineering band
structures of two-dimensional materials, including the formation of moiré bands, flat bands …

Real-space visualization of a defect-mediated charge density wave transition

JL Hart, H Pan, S Siddique, N Schnitzer… - Proceedings of the …, 2024 - pnas.org
We study the coupled charge density wave (CDW) and insulator-to-metal transitions in the
2D quantum material 1T-TaS2. By applying in situ cryogenic 4D scanning transmission …

Bevel-edge epitaxy of ferroelectric rhombohedral boron nitride single crystal

L Wang, J Qi, W Wei, M Wu, Z Zhang, X Li, H Sun… - Nature, 2024 - nature.com
Within the family of two-dimensional dielectrics, rhombohedral boron nitride (rBN) is
considerably promising owing to having not only the superior properties of hexagonal boron …