@article {2003.06776, archivePrefix = {arXiv}, eprint = {2003.06776}, primaryClass = {cond-mat.str-el}, author = {Yao-Ming Dong and Ya-Hui Zhai and Dong-Xing Zheng and Jing Wang}, title = {Stability of two-dimensional asymmetric materials with a quadratic band crossing point under four-fermion interaction and impurity scattering}, year = {2020}, url = {http://arxiv.org/abs/2003.06776} }