μSR study of a quantum spin liquid candidate: the S=1/2 vanadium oxyfluoride kagome antiferromagnet

13th International Conference on Muon Spin Rotation, Relaxation and Resonance

Orain, J.C.^1 ; Clark, L.^2 ; Bert, F.^1 ; Mendels, P.^1 ; Attfield, P.^2 ; Aidoudi, F.H.^3 ; Morris, R.E.^3 ; Lightfoot, P.^3 ; Amato, A.^4 ; Baines, C.^4

Laboratoire de Physique des Solides, UMR 8502 CNRS, Universite Paris-Sud, Orsay

91400, France^1

CSEC and School of Chemistry, University of Edinburgh, Edinburgh

EH9 3JZ, United Kingdom^2

School of Chemistry and EaSTChem, University of ST. Andrews, St. Andrews

KY16 9ST, United Kingdom^3

Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, Villigen PSI

5232, Switzerland^4

关键词: Antiferromagnets;    Longitudinal fields;    Oxyfluorides;    Quantum spin liquid;    Shift-and;    Spin freezing;    Transverse configuration;    Transverse field;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/551/1/012004/pdf
DOI  :  10.1088/1742-6596/551/1/012004

来源: IOP

【 摘 要 】

We present a detailed μSR study of the recently synthesized compound, [NH4]2[C7H14N][V7O6F18] (DQVOF), a geometrically frustrated magnetic material, both in longitudinal and transverse configurations. The μSR measurements in zero and longitudinal field show that there is no spin freezing down to 20 mK which is the key requirement for a quantum spin liquid state. Further experiments in transverse field single out two contributions with different shift and broadening which shed a new light on the location of the muons stopping sites.