Fluctuating magnetism in Zn-doped averievite with well-separated kagome layers
Journal article, 2025
Kagome lattice decorated with S = 1/2 spins is one of the most discussed ways to realize a quantum spin liquid. However, all previous material realizations of this model have suffered from additional complications, ranging from additional interactions to impurity effects. Recently, a new quantum kagome system has been identified in the form of averievite Cu5-xZnxV2O10(CsCl), featuring a unique double-layer spacing between the kagome planes. Using muon spin spectroscopy we show that only a complete substitution (i.e., x = 2) of interplanar copper ions leads to a quantum-disordered ground state. In contrast, the parent compound (x = 0) exhibits long-range magnetic order, with a phase transition around 24 K. Experiments performed on the partially substituted material (x = 1) show that the transformation proceeds through an intermediate disordered, partially frozen ground state, unaffected by pressures up to 23 kbar. Our study provides a microscopic view of the magnetism of the decoupling of the kagome layers and establishes the averievite as a new material platform for the experimental study of the fully-decoupled kagome layers.
Author
G. Simutis
Paul Scherrer Institut
University Paris-Saclay
H. Zeroual
University Paris-Saclay
I. Villa
Paul Scherrer Institut
University Paris-Saclay
M. Georgopoulou
University College London (UCL)
Institut Laue-Langevin
D. Boldrin
University of Glasgow
D. Chatterjee
University of Oxford
University Paris-Saclay
C. N. Wang
Paul Scherrer Institut
C. Baines
Paul Scherrer Institut
T. Shiroka
Swiss Federal Institute of Technology in Zürich (ETH)
Paul Scherrer Institut
R. Khasanov
Paul Scherrer Institut
H. Luetkens
Paul Scherrer Institut
Yasmine Sassa
Chalmers, Physics, Materials Physics
M. Bartkowiak
Paul Scherrer Institut
A. S. Wills
University College London (UCL)
E. Kermarrec
University Paris-Saclay
F. Bert
University Paris-Saclay
P. Mendels
University Paris-Saclay
PHYSICAL REVIEW MATERIALS
2475-9953 (ISSN)
Vol. 9 7 074003Hybrid MEG-MRI Imaging System (MEGMRI)
European Commission (EC) (EC/FP7/200859), 2013-01-01 -- 2013-02-28.
European Commission (EC) (EC/FP7/200859), 2008-05-01 -- 2012-12-31.
Subject Categories (SSIF 2025)
Condensed Matter Physics
DOI
10.1103/l7gq-cc96