Superexchanges and Charge Transfer in the La${}_3$Ni${}_2$O${}_7$ Thin Films

Yuxun Zhong, Wéi Wú, Dao-Xin Yao

The recent discovery of ambient-pressure superconductivity with $T_c$ above 40 K in La${}_3$Ni${}_2$O${}_7$ thin films represents a significant advance in the field of nickelate supercon…