Piezoelectricity and dipolar polarization of group V-IV-III-VI sheets: A first-principles study

Spin-Current Modulation in Hexagonal Buckled ZnTe and CdTe Monolayers for Self-Powered Flexible-Piezo-Spintronic Devices

“…As the name suggests, the atomic positions of the strained monolayers are fully relaxed in the relaxed-ion method. More details of the calculation can be found in other reports. , The uniaxial strain within ±1% in an interval of 0.05% strain is applied to calculate polarization change (Δ P ). The elastic stiffness constants C 11 and C 12 for both relaxed ion and clamped ion are calculated using eq and listed in Table . …”

Enhanced vertical polarization and ultra-low polarization switching barriers of two-dimensional SnS/SnSSe ferroelectric heterostructures

“…1–6 Fortunately, in some 2D materials, polarizations are weakly affected by the depolarization field, and then large piezoelectric coefficients can be found. 7–12 The positive charge center does not coincide with the negative charge center, which introduces the electric dipole moment in 2D materials and makes them undergo spontaneous polarization. Ferroelectric materials with switchable polarization can serve as potential materials in nonvolatile memory (NVM) devices and sensors.…”

Switch effect on controlled water splitting by biaxial strain regulating the promising two-dimensional Janus X2PAs (X = Si, Ge and Sn) photocatalyst

“…2D materials with Janus geometry have garnered much attention for their new properties arising from the broken out-of-plane symmetry. 10,15–24 Interestingly, Yang's group has proposed a new photocatalytic model with an intrinsic dipole that can relieve restriction on the bandgap requirement of photocatalysts. 25 The potential applications of Janus materials in photocatalysis have been revealed in the past.…”