Highly Anisotropic Charge Dynamics and Spectral Weight Redistribution in the Trilayer Nickelate La${}_4$Ni${}_3$O${}_{10}$

Zhe Liu, Jie Li, Deyuan Hu +10

We study the $ab$-plane and $c$-axis charge dynamics of La${}_4$Ni${}_3$O${}_{10}$ using optical spectroscopy. While a pronounced Drude profile, i.e. metallic response, is observed i…