Orbital-dependent electron correlation in double-layer nickelate La₃Ni₂O₇.

ABSTRACT: The latest discovery of high temperature superconductivity near 80 K in La₃Ni₂O₇ under high pressure has attracted much attention. Many proposals are put forth to understand the origin of superconductivity. The determination of electronic structures is a prerequisite to establish theories to understand superconductivity in nickelates but is still lacking. Here we report our direct measurement of the electronic structures of La₃Ni₂O₇ by high-resolution angle-resolved photoemission spectroscopy. The Fermi surface and band structures of La₃Ni₂O₇ are observed and compared with the band structure calculations. Strong electron correlations are revealed which are orbital- and momentum-dependent. A f

SUBMITTER: Yang J 

PROVIDER: S-EPMC11116484 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature