Abstract
We report on time-resolved pump–probe measurements of spin-dependent dynamics in strained Nd0.67Sr0.33MnO3 thin films grown on three different substrates: LaAlO3 (001), SrTiO3 (001), and NdGaO3 (110). The temperature dependence of the long-lived spin-relaxation component is represented well by a power-law decay of long-range correlations, clearly showing the transition from quasilong-range ferromagnetic order to a disordered paramagnetic phase. The “disordering” temperature, TM, where the intermediate phase of quasilong-range order appears, varies according to the creation of static-distortion waves under different strain forces.
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