Tracing the main elements and electron orbitals that induce superconducting phase transition Sheng-Hai Zhu, Han Qin, Mi Zhong, Dai-He Fan, Xiang-Hui Chang, Yun Wei, Miao Zhang, Tao Zhu, Bin Tang, Fu-Sheng Liu and Qi-Jun Liu EPL, 133 6 (2021) 67004 Published online: 14 May 2021 DOI: 10.1209/0295-5075/133/67004