High-pressure response of vibrational properties of b-AsP:Raman studies.

The structural evolution of black arsenic-phosphorous (b-AsP) alloys with varying arsenic concentrations was investigated under hydrostatic pressure usingRaman spectroscopy. High-pressure experiments were conducted using a diamond anvil cell, which revealed pressure-induced shifts in vibrational modes associated with P-P bonds (,,B2g), As-As bonds (,,B2g), and As-P bonds in b-AsPalloys. Two distinct pressure regimes were observed.

Insight into the stacking and the species-ordering dependences of interlayer bonding in SiC/GeC polar heterostructures.

Two-dimensional (2D) polar materials experience an in-plane charge transfer between different elements due to their electron negativities. When they form vertical heterostructures, the electrostatic force triggered by such charge transfer plays an important role in the interlayer bonding beyond van der Waals (vdW) interaction. Our comprehensive first principle study on the structural stability of the 2D SiC/GeC hybrid bilayer heterostructure has found that the electrostatic interlayer interaction can induce the-orbital hybridization between adjacent layers under different stacking and out-of-plane species ordering, with strong hybridization in the cases of Si-C and C-Ge species orderings but weak hybridization in the case of the C-C ordering.