Simultaneous photonic and phononic topological pseudospin-dependent edge states in phoxonic crystalsZhong Hu, LinLin Lei, Lingjuan He, Wenxing Liu, Tianbao Yu, Tongbiao Wang and Qinghua LiaoEPL, 138 1 (2022) 15001DOI: https://doi.org/10.1209/0295-5075/ac65af