Character of Cu and O in partially oxidized “29” Cu x O/Cu(111) from Auger Photoelectron Coincidence Spectroscopy
Swarnshikha Sinha, Danilo Kühn, Fredrik O. L. Johansson, Andreas Lindblad, Pavel A. Korzhavyi, Nils Mårtensson, Alexander Föhlisch · 2026
Read Character of Cu and O in partially oxidized “29” Cu x O/Cu(111) from Auger Photoelectron Coincidence Spectroscopy by Swarnshikha Sinha, Danilo Kühn, Fredrik O. L. Johansson, Andreas Lindblad, Pavel A. Korzhavyi, Nils Mårtensson, Alexander Föhlisch (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13474937.txt.
Description
Sinha and colleagues settle a dispute about the chemical state of copper in a partly oxidized surface layer in this 2026 physics study. The layer, nicknamed the “29” oxide, grows on copper metal and matters for catalysts and corrosion science. Whether its copper atoms behave like metal or like a true oxide was controversial. The team used Auger photoelectron coincidence spectroscopy. This technique pairs emitted electrons for extra selectivity.
They compared the layer against pure copper metal and two known copper oxides. Copper in the top three atomic layers sat very close to the metallic state. Its formal oxidation value was near zero, rather than near the oxide values. The oxygen appeared in three distinct bonding forms, matching the structural model proposed for this surface.
Catalog record
| CREATOR | Swarnshikha Sinha, Danilo Kühn, Fredrik O. L. Johansson, Andreas Lindblad, Pavel A. Korzhavyi, Nils Mårtensson, Alexander Föhlisch |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 43 KB |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |