Experimental consequences of disorder at an antiferromagnetic quantum phase transition

S. L. Armstrong, D. M. Silevitch and T. F. Rosenbaum ()
Additional contact information
S. L. Armstrong: California Institute of Technology
D. M. Silevitch: California Institute of Technology
T. F. Rosenbaum: California Institute of Technology

Nature Communications, 2025, vol. 16, issue 1, 1-6

Abstract: Abstract Disorder is known to have a profound influence on classical phase transitions, and it is anticipated to be even more important for quantum phase transitions. However, experimental investigation of the influence of disorder on phase transitions normally requires numerous samples over the range of disorder. Here, we investigate the field-driven quantum phase transition in the antiferromagnet LiErF4. The isotopic distribution of natural Er permits us to probe the transition in the clean and dirty regimes in the same sample. 167Er, with non-zero nuclear spin on 23% of the Er sites, induces random mass disorder in the dirty (low-temperature) regime. We use specific heat and ac magnetic susceptibility experiments to identify a crossover between the two regimes at T = 150 mK. The critical behavior is consistent with a violation of the Harris criterion in the clean regime and a change of universality class in the dirty regime.

Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-025-57322-7 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-57322-7

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-025-57322-7

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().