Metallic crossover through the tilt-free transition in La${}_3$Ni${}_2$O${}_7$ at high pressure and temperature

Bastien Michon, Yingpeng Yu, Beatrice D'Alò +8

La${}_3$Ni${}_2$O${}_7$, a bilayer nickelate with Ruddlesden-Popper structure, undergoes a pressure-induced structural transition from a tilted Amam phase to an untilted Fmmm (or I4/mmm)…