AI Article Synopsis
- The study investigates how the Yb valence in the compound YbB4 changes with temperature, using advanced spectroscopy techniques from 12 to 300 K.
- Findings show that the Yb valence transitions from approximately 2.61 at 12 K to 2.67 at 300 K, supporting that YbB4 behaves as a Kondo system with significant interactions.
- The research suggests that the notable Kondo interaction might prevent YbB4 from magnetic ordering at low temperatures, and it also examines the relationship between zero-point valence and Kondo temperature scales.
Article Abstract
We report the temperature dependence of the Yb valence in the geometrically frustrated compoundYbB4from 12 to 300 K using resonant x-ray emission spectroscopy at the YbLα1transition. We find that the Yb valence,, is hybridized between the = 2 and = 3 valence states, increasing fromv=2.61±0.01at 12 K tov=2.67±0.01at 300 K, confirming thatYbB4is a Kondo system in the intermediate valence regime. This result indicates that the Kondo interaction inYbB4is substantial, and is likely to be the reason whyYbB4does not order magnetically at low temperature, rather than this being an effect of geometric frustration. Furthermore, the zero-point valence of the system is extracted from our data and compared with other Kondo lattice systems. The zero-point valence seems to be weakly dependent on the Kondo temperature scale, but not on the valence change temperature scale.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/1361-648X/ac7629 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!