Core-level x-ray photoemission on NiO in the impurity limit
Physical Review B - Condensed Matter and Materials Physics Volume 61 Issue 20
Page 13 403-13 409
published_at 2000-05-15
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| File | |
| Title ( eng ) |
Core-level x-ray photoemission on NiO in the impurity limit
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| Creator |
Altieri S.
Tjeng L. H.
Sawatzky G. A.
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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 61 |
| Issue | 20 |
| Start Page | 13 403 |
| End Page | 13 409 |
| Abstract |
We present a core level X-ray photoelectron spectroscopy study of NixMg12xO crystals with 0.03<x<1. We show that nonlocal effects involving inter-Ni-site fluctuations strongly influence the Ni 2p core-level spectra for higher Ni concentrations including NiO itself. It is only in the very dilute Ni limit that the core-level spectra can be described in terms of an Anderson impurity model which also must include a realistic band structure for the O 2p. Moreover, it is only in this limit that a single-site model can explain the core-level and valence-band spectra as well as the optical data by using one consistent set of parameter values. These results consolidate the concepts of nonlocal screening and provide a better understanding of the electronic structure of NiO.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2000-05-15 |
| Rights |
Copyright (c) 2000 American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.61.13403
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.61.13403
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