Observation of the cluster spin-glass phase in La2-xSrxCuO4 by anelastic spectroscopy
Abstract
An increase of the acoustic absorption is found in La2-xSrxCuO4 (x = 0.019, 0.03 and 0.06) close to the temperatures at which freezing of the spin fluctuations in antiferromagnetic-correlated clusters is expected to occur. The acoustic absorption is attributed to changes of the sizes of the quasi-frozen clusters induced by the vibration stress through magnetoelastic coupling.
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