Fig. 3: Annealing time constants.

a The relaxation time τ of α-CoV2O6 measured with different applied transverse fields (H x) with respective to the longitudinal field (H z), H x ~ 0, 0.3H z, 0.6H z, H z, 1.7Hz, respectively. b Inverse-temperature dependence of the relaxation rate τ−1. The blue line represents the fit to the experimental data with H x ~ 0 by the Arrhenius function τ−1 = \({\tau }_{{{{{{{{\rm{m}}}}}}}}}^{-1}\exp (-\Delta E/T)\) below 2.8 K, whereas the red line shows a constant fit to the data with μ0H x ~ 2 T below 1.1 K. The raw data of magnetization relaxations, used in extracting τ, are shown in Supplementary Fig. 14. Error bars, 1σ s.e.