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VOLUME 102 (2015) | ISSUE 6 | PAGE 423
Evidence for resonant scattering of electrons by spin fluctuations in LaNiO3/LaAlO3 heterostructures grown by pulsed laser deposition
We present measurements of resistivity ρ in highly oriented LaNiO3 films grown on LaAlO3 substrates by using a pulsed laser deposition technique. The experimental data are found to follow a universal \rho (T) \propto T^{3/2} dependence for the entire temperature interval (20 K<T<300 K). The observed behavior has been attributed to a resonant scattering of electrons on antiferromagnetic fluctuations (with a characteristic energy \hbar \omega _{sf}\simeq 2.1 meV) triggered by spin-density wave propagating through the interface boundary of LaNiO3/LaAlO3 sandwich.