Evidence for resonant scattering of electrons by spin fluctuations in LaNiO3/LaAlO3 heterostructures grown by pulsed laser deposition
S. Sergeenkov+, L. Cichetto, Jr.*×°, E. Longo×°, F. M. Araujo-Moreira*
+Departamento de Física, CCEN, Universidade Federal da Paraíba, 58051-970 Joo Pessoa, PB, Brazil *Departamento de Física, Universidade Federal de So Carlos, 13565-905 So Carlos, SP, Brazil ×LIEC - Department of Chemistry, Universidade Federal de So Carlos, 13565-905 So Carlos, SP, Brazil °Institute of Chemistry, Universidade Estadual Paulista - Unesp, 14801-907 Araraquara, SP, Brazil
Abstract
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
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 meV) triggered by
spin-density wave propagating through the interface boundary of LaNiO3/LaAlO3
sandwich.
|