Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-06-06
Applied Physics Letters, Volume 97, Issue 12, id. 124101 (3 pages) (2010)
Physics
Condensed Matter
Strongly Correlated Electrons
Scientific paper
10.1063/1.3484960
Iron resonant valance band photoemission spectra of Sr substituted LaFe0.75Ni0.25 O3-{\delta} have been recorded across the Fe 2p - 3d absorption threshold to obtain Fe specific spectral information on the 3d projected partial density of states. Comparison with La1-xSrxFeO3 resonant VB PES literature data suggests that substitution of Fe by Ni forms electron holes which are mainly O 2p character. Substitution of La by Sr increases the hole concentration to an extent that the eg structure vanishes. The variation of the eg and t2g structures is paralleled by the changes in the electrical conductivity.
Aksoy Funda
Braun Artur
Erat Selma
Gauckler Ludwig J.
Graule Thomas
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