An investigation of the mechanical, electronic, and optical properties of the recently reported material K4 phosphorus was made in this work. The K4 phosphorus has been proved to be mechanically and dynamically stable up to 7 GPa under hydrostatic pressure. We compared the elastic anisotropy, average acoustic velocity and Debye temperature of K4 phosphorus at 0 and 7 GPa. The ideal tensile at large strains of K4 phosphorus was also examined, with the results showing that it would cleave under the tensile strength of 8.5 GPa with the strain of 0.3. In addition, the effect of tensile strain and pressure on optical properties and band gap were studied.
@article{arxiv.1710.00634,
title = {Pressure and strain effects on the optical properties of K4 phosphorus},
author = {Qun Wei and Chenyang Zhao and Meiguang Zhang and Haiyan Yan and Quan Zhang and Yingjiao Zhou and Xuanmin Zhu},
journal= {arXiv preprint arXiv:1710.00634},
year = {2017}
}