Piezoelectric properties of $\mathrm{G}{\mathrm{a}}_2{\mathrm{O}}_3$: a first-principle study

San-Dong Guo, Hui-Min Du

The compounds exhibit piezoelectricity, which demands to break inversion symmetry, and then to be a semiconductor. For $\mathrm{G}{\mathrm{a}}_2{\mathrm{O}}_3$, the orthorhombic case ($\epsilon$-$\mathrm{Ga_2O…