Scaling Behavior of the Generalized Susceptibility inLa2−xSrxCuO4+y

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Abstract
We have measured the static and dynamic spin fluctuations in a crystal of La2−xSrxCuO4+y in the spin-glass doping regime. The static spin correlations are well described by a simple model in which the inverse correlation length κ(x, T)=κ(x, 0)+κ(0, T). The dynamic spin fluctuations exhibit a simple scaling behavior in ωT for temperatures 10 K≤T≤500 K for the measured energies 4.5≤ω≤12 meV.

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