Deposition of Ca on the 2H–NbSe2 surface: Competing processes

The interaction of Ca evaporated in vacuum onto a 2H–NbSe2 surface held at room temperature was studied by photoelectron spectroscopy. Indications of an intercalation reaction were observed initially, but larger Ca depositions resulted in a layer-breaking reaction producing a disordered overlayer of...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of chemical physics 2024-04, Vol.160 (16)
Main Author: Starnberg, H. I.
Format: Article
Language:English
Subjects:
Calcium
Condensed Matter Physics
Den kondenserade materiens fysik
Intercalation
Intercalation compounds
Photoelectrons
Room temperature
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The interaction of Ca evaporated in vacuum onto a 2H–NbSe2 surface held at room temperature was studied by photoelectron spectroscopy. Indications of an intercalation reaction were observed initially, but larger Ca depositions resulted in a layer-breaking reaction producing a disordered overlayer of varying compositions. The layer-breaking reaction is likely due to the intercalation compound becoming unstable as the local Ca concentration exceeds the threshold value. Continued Ca depositions eventually resulted in the growth of three-dimensional islands of Ca metal, exposing relatively unaffected NbSe2 layers between the Ca islands.
ISSN:0021-9606
1089-7690
1089-7690
DOI:10.1063/5.0201641