The structural crystal features, electron transport and magnetotransport of the epitaxial strontium iridate (SrIrO3) and iridate/manganite SrIrO3/La0.7Sr0.3MnO3 heterostructure have been investigated. The influence of epitaxial strain relaxation caused by the lattice mismatch between SrIrO3 films and five substrates: SrTiO3, NdGaO3, (LaAlO3)0.3(Sr2TaAlO6)0.7, LaAlO3, and Pb(Mg1/3Nb2/3)O3-PbTiO3 on electron and magnetic transport has been observed. A pronounced impact of strong spin-orbit interaction on characteristics of SrIrO3 films has been revealed by means of X-ray photoelectron spectroscopy, magnetoresistance and Hall-resistance measurements at temperatures T = 2-300 K. These findings highlight the tunability of spin-orbit-driven transport phenomena in strain-controlled SrIrO3-based epitaxial systems, relevant for future spintronic oxide heterostructures. The contribution of Kondo scattering on temperature dependence of SrIrO3 films resistance was observed.
@article{arxiv.2511.02998,
title = {Dirac semimetal strontium iridate thin films with strong spin-orbit interaction for magnetic heterostructures},
author = {Gennady A. Ovsyannikov and Nikita V. Dubitskiy and Georgi D. Ulev and Karen Y. Constantinian and Ivan E. Moskal and Victoria A. Baydikova and Andrei M. Petrzhik and Anton V. Shadrin and Alexei V. Mashirov},
journal= {arXiv preprint arXiv:2511.02998},
year = {2025}
}
Comments
23 pages, 12 figures, 3 tables. Epitaxial SrIrO$_3$ films and SrIrO$_3$/La$_{0.7}$Sr$_{0.3}$MnO$_3$ heterostructures on perovskite substrates showing strain-controlled spin-orbit coupling, Kondo effect, magnetoresistance and Hall measurements for oxide spintronics applications. Submitted to Journal of Alloys and Compounds