Fluctuating magnetism in Zn-doped averievite with well-separated kagome layers
/ Authors
G. Simutis, L. Su'arez-Garc'ia, H. Zeroual, I. Villa, M. Georgopoulou, D. Boldrin, D. Chatterjee, C. Wang, C. Baines, T. Shiroka
and 9 more authors
R. Khasanov, H. Luetkens, B. Fåk, Y. Sassa, M. Bartkowiak, A. Wills, E. Kermarrec, F. Bert, P. Mendels
/ Abstract
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. Published by the American Physical Society 2025
Journal: Physical Review Materials
DOI: 10.1103/l7gq-cc96