A class of two-dimensional SiAs monolayers with novel electronic and optical properties from ab initio investigationsXinliang Wang, Guangtao Deng, Weiyang Yu, Baoji Wang, Xiaohua Li, Yujin Liu, Yuhuan Zhao, Qin Wang, Liwei Zhang and Xiaolin CaiEur. Phys. J. Plus, 134 6 (2019) 287DOI: https://doi.org/10.1140/epjp/i2019-12643-9