AgO investigated by photoelectron spectroscopy : Evidence for mixed valence

Bielmann, Michael; Schwaller, Patrick; Ruffieux, Pascal; Gröning, Oliver; Schlapbach, Louis; Gröning, Pierangelo (2002). AgO investigated by photoelectron spectroscopy : Evidence for mixed valence Physical Review B, 65(23), pp. 1-9. American Physical Society 10.1103/PhysRevB.65.235431

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We present photoelectron spectroscopy investigations of in-situ prepared AgO. The sample was prepared by room temperature oxidation of Ag in an electron cyclotron resonance O2 plasma. In contrast to other measurements based on ex situ prepared AgO powder samples, our investigations show a distinct double peak structure of the O 1s signal with a remarkable chemical shift of 2.9 eV between the two O 1s components. These two components can not be motivated from a crystallographic point of view as the oxygen sites are all equivalent in the unit cell. We interpret this double peak structure as a characteristic feature of AgO and discuss it in terms of mixed valences.

Item Type:

Journal Article (Original Article)

Division/Institute:

Department of Engineering and Information Technology
Department of Engineering and Information Technology > Institute for Applied Laser, Photonics and Surface Technologies

Name:

Bielmann, Michael; Schwaller, Patrick; Ruffieux, Pascal; Gröning, Oliver; Schlapbach, Louis and Gröning, Pierangelo

ISSN:

0163-1829

Publisher:

American Physical Society

Language:

English

Submitter:

Patrick Schwaller

Date Deposited:

19 Feb 2020 09:30

Last Modified:

22 Jun 2020 14:45

Publisher DOI:

10.1103/PhysRevB.65.235431

ARBOR DOI:

10.24451/arbor.9282

URI:

https://arbor.bfh.ch/id/eprint/9282

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