Back to Search
Start Over
Enhancement of the density of states at the Fermi level due to oxygen atoms in noble metals
- Publication Year :
- 2018
-
Abstract
- The interaction of oxygen with noble metals such as silver has been an important topic of research for many decades. Here, we show occurrence of a peak in the density of states (DOS) at the Fermi level ($E_F$) when oxygen atoms occupy disordered substitutional positions in noble metals such as Ag, Au or Ag-Au alloy. This results in large enhancement of DOS at $E_F$ with respect to Ag or Au metal. Its origin is attributed to O 2$p$ related disorder broadened flat band that straddles almost all the high symmetry directions of the Brillouin zone. Our work suggests that if a large concentration of disordered oxygen can be realized in nano-structures of noble metals, it may lead to interesting phenomenon.<br />7 figures
- Subjects :
- Materials science
Alloy
chemistry.chemical_element
FOS: Physical sciences
02 engineering and technology
engineering.material
01 natural sciences
Oxygen
Metal
symbols.namesake
0103 physical sciences
Materials Chemistry
010306 general physics
Condensed Matter - Materials Science
Condensed matter physics
Fermi level
Materials Science (cond-mat.mtrl-sci)
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Brillouin zone
Oxygen atom
chemistry
visual_art
engineering
Density of states
visual_art.visual_art_medium
symbols
Related disorder
0210 nano-technology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....26547be0697a687845c555000060b42f