Observation of Conduction Band Satellite of Ni Metal by 3p-3d Resonant Inverse Photoemission Study

TL;DR

This study uses resonant inverse photoemission to observe satellite features in Ni metal, revealing many-body interactions and confirming the 3d8 configuration in its ground state.

Contribution

It provides the first direct observation of conduction band satellites in Ni metal via resonant inverse photoemission, highlighting many-body effects.

Findings

Satellite structures at 2.5 and 4.2 eV above Fermi edge

Resonant enhancement at the Ni 3p absorption edge

Confirmation of 3d8 configuration in Ni ground state

Abstract

Resonant inverse photoemission spectra of Ni metal have been obtained across the Ni 3$p$ absorption edge. The intensity of Ni 3$d$ band just above Fermi edge shows asymmetric Fano-like resonance. Satellite structures are found at about 2.5 and 4.2 eV above Fermi edge, which show resonant enhancement at the absorption edge. The satellite structures are due to a many-body configuration interaction and confirms the existence of 3$d^8$ configuration in the ground state of Ni metal.