Fig. 3: Thermal and temporal evolution of spin fluctuations of LiGa0.2In0.8Cr4O8 measured by 7Li NMR, ZF-μSR, and ESR. | npj Quantum Materials

Fig. 3: Thermal and temporal evolution of spin fluctuations of LiGa0.2In0.8Cr4O8 measured by 7Li NMR, ZF-μSR, and ESR.

From: Dichotomy in temporal and thermal spin correlations observed in the breathing pyrochlore LiGa1−xInxCr4O8

Fig. 3

a 7Li NMR spectra at selected temperatures T = 2.7 and 250 K. b ZF-μSR spectra at selected temperatures. c Longitudinal-field dependence of the μSR spectra measured at T = 25 mK. The solid lines denote the fit to the data using the sum of two simple exponential functions. d Derivative of the ESR absorption spectra measured at various temperatures. Spectra are vertically shifted for clarity. e T dependence of 7Li spin-lattice relaxation rate 1/T1 and spin-spin relaxation rate 1/T2. The red solid line denotes the Arrhenius equation, yielding the spin pseudogap of Δ/kB = 35(1) K. The solid black line represents a power-law behavior of 1/T1 and 1/T2. f Muon spin relaxation rate as a function of temperature λf(T). The solid magenta line represents the power-law fit to the data. g Muon spin relaxation as a function of longitudinal field λLF(H), along with fitting to the Redfield formula. h T dependence of the peak-to-peak ESR linewidth ΔHpp(T). The solid orange lines indicate a power-law behavior of ΔHpp(T) in two different temperature ranges marked by the shaded region at T* = 10 K. Error bars on the data points indicate a standard error.

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