The electronic structure of the doped one-dimensional transition metal oxide Y2-cursive chiCacursive chiBaNiO5 studied using X-ray absorption

Z. Hu; M. Knupfer; M. Kielwein; U. K. Rößler; M. S. Golden; J. Fink; F. M.F. De Groot; T. Ito; K. Oka; G. Kaindl

doi:10.1007/s10051-002-8987-z

The electronic structure of the doped one-dimensional transition metal oxide Y_{2-cursive chi}Ca_{cursive chi}BaNiO₅ studied using X-ray absorption

Z. Hu^*, M. Knupfer, M. Kielwein, U. K. Rößler, M. S. Golden, J. Fink, F. M.F. De Groot, T. Ito, K. Oka, G. Kaindl

^*Corresponding author for this work

Sub Inorganic Chemistry and Catalysis

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

A strong anisotropic distribution of the holes in Ni 3d and O 2p orbitals is observed in the polarization dependent O 1s and Ni 2p_3/2 X-ray absorption spectroscopy of the linear-chain nickelate Y_{2-cursive chi}Ca_{cursive chi}BaNiO₅ (cursive chi = 0, 0.05, 0.1, 0.2), which demonstrates the one-dimensional nature of the electronic state in these compounds. The holes introduced by Ca-doping occupy both O 2p and Ni 3d orbitals along the NiO₅ chains. By comparing the experimental Ni 2p_3/2 absorption spectra of Y_{2-cursive chi}Ca_{cursive chi}BaNiO₅ to those from charge transfer multiplet calculations we can derive the orbital character of the additional holes to be of ∼60% O2p and ∼40% Ni 3d.

Original language	English
Pages (from-to)	449-453
Number of pages	5
Journal	European Physical Journal B
Volume	26
Issue number	4
DOIs	https://doi.org/10.1007/s10051-002-8987-z
Publication status	Published - 2 Apr 2002

Keywords

71.28.+d Narrow-band systems; intermediate-valence solids
78.70.Dm X-ray absorption spectra
79.60.-i Photoemission and photoelectron spectra

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10.1007/s10051-002-8987-z

Cite this

@article{6b7947ff50884153bc8c2ff45505da57,

title = "The electronic structure of the doped one-dimensional transition metal oxide Y2-cursive chiCacursive chiBaNiO5 studied using X-ray absorption",

abstract = "A strong anisotropic distribution of the holes in Ni 3d and O 2p orbitals is observed in the polarization dependent O 1s and Ni 2p3/2 X-ray absorption spectroscopy of the linear-chain nickelate Y2-cursive chiCacursive chiBaNiO5 (cursive chi = 0, 0.05, 0.1, 0.2), which demonstrates the one-dimensional nature of the electronic state in these compounds. The holes introduced by Ca-doping occupy both O 2p and Ni 3d orbitals along the NiO5 chains. By comparing the experimental Ni 2p3/2 absorption spectra of Y2-cursive chiCacursive chiBaNiO5 to those from charge transfer multiplet calculations we can derive the orbital character of the additional holes to be of ∼60% O2p and ∼40% Ni 3d.",

keywords = "71.28.+d Narrow-band systems; intermediate-valence solids, 78.70.Dm X-ray absorption spectra, 79.60.-i Photoemission and photoelectron spectra",

author = "Z. Hu and M. Knupfer and M. Kielwein and R{\"o}{\ss}ler, {U. K.} and Golden, {M. S.} and J. Fink and {De Groot}, {F. M.F.} and T. Ito and K. Oka and G. Kaindl",

year = "2002",

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doi = "10.1007/s10051-002-8987-z",

language = "English",

volume = "26",

pages = "449--453",

journal = "European Physical Journal B",

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T1 - The electronic structure of the doped one-dimensional transition metal oxide Y2-cursive chiCacursive chiBaNiO5 studied using X-ray absorption

AU - Hu, Z.

AU - Knupfer, M.

AU - Kielwein, M.

AU - Rößler, U. K.

AU - Golden, M. S.

AU - Fink, J.

AU - De Groot, F. M.F.

AU - Ito, T.

AU - Oka, K.

AU - Kaindl, G.

PY - 2002/4/2

Y1 - 2002/4/2

N2 - A strong anisotropic distribution of the holes in Ni 3d and O 2p orbitals is observed in the polarization dependent O 1s and Ni 2p3/2 X-ray absorption spectroscopy of the linear-chain nickelate Y2-cursive chiCacursive chiBaNiO5 (cursive chi = 0, 0.05, 0.1, 0.2), which demonstrates the one-dimensional nature of the electronic state in these compounds. The holes introduced by Ca-doping occupy both O 2p and Ni 3d orbitals along the NiO5 chains. By comparing the experimental Ni 2p3/2 absorption spectra of Y2-cursive chiCacursive chiBaNiO5 to those from charge transfer multiplet calculations we can derive the orbital character of the additional holes to be of ∼60% O2p and ∼40% Ni 3d.

AB - A strong anisotropic distribution of the holes in Ni 3d and O 2p orbitals is observed in the polarization dependent O 1s and Ni 2p3/2 X-ray absorption spectroscopy of the linear-chain nickelate Y2-cursive chiCacursive chiBaNiO5 (cursive chi = 0, 0.05, 0.1, 0.2), which demonstrates the one-dimensional nature of the electronic state in these compounds. The holes introduced by Ca-doping occupy both O 2p and Ni 3d orbitals along the NiO5 chains. By comparing the experimental Ni 2p3/2 absorption spectra of Y2-cursive chiCacursive chiBaNiO5 to those from charge transfer multiplet calculations we can derive the orbital character of the additional holes to be of ∼60% O2p and ∼40% Ni 3d.

KW - 71.28.+d Narrow-band systems; intermediate-valence solids

KW - 78.70.Dm X-ray absorption spectra

KW - 79.60.-i Photoemission and photoelectron spectra

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