Yulian M. Vysochanskii

TL;DR: The existence of stable polarization in a van-der-Waals crystal naturally points toward new strategies for ultimate scaling of polar materials, quasi-2D, and single-layer materials with advanced and nonlinear dielectric properties that are presently not found in any members of the growing "graphene family".

TL;DR: The photorefractive properties of Sn2P2S6 crystals doped with Te and Sb in the near-infrared wavelength range up to 1064 nm are reported in this article.

TL;DR: From systematic imaging experiments, it is inferred the formation of a partially polarized antiferroelectric state, with inclusions of structurally distinct ferrielectric domains enclosed by the corresponding phase boundaries, which may lead to rational strategies for incorporation of ferroic functionality into van der Waals heterostructures with stronger resilience toward detrimental size-effects.

TL;DR: An ab initio-based model of the temperature-induced ferroelectric phase transition in Sn2P2S6 (SPS) as a prototype of an unconventional ferroElectric is developed and significant nonlinear coupling between order parameter and strain is observed.

TL;DR: In this paper, a photorefractive brown Sn2P2S6 crystal was grown by the vapor-transport technique with SnI2 as the transport agent and showed that the measured reflectivity represents the limit given by the transmission of the ring-cavity arrangement.