Visualization of Oxygen Vacancies and Self-doped Ligand Holes in La3Ni2O7-δ

Zehao Dong^#, Mengwu Huo^#, Jie Li^#, Jingyuan Li, Pengcheng Li, Hualei Sun, Lin Gu, Yi Lu^*, Meng Wang^*, Yayu Wang^*, Zhen Chen^*