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- Title
Manganite Heterostructures SrIrO<sub>3</sub>/La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> and Pt/La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> for Generation and Registration of Spin Current.
- Authors
Ovsyannikov, G. A.; Constantinian, K. Y.; Ulev, G. D.; Shadrin, A. V.; Lega, P. V.; Orlov, A. P.
- Abstract
This paper presents the results of experimental studies of the cross section of the interfaces of the SrIrO3/La0.7Sr0.3MnO3 and Pt/La0.7Sr0.3MnO3, heterostructures, in which, upon excitation of ferromagnetic resonance in a La0.7Sr0.3MnO3 film, a spin current arises that flows through the interface in structure. Epitaxial growth of thin films of strontium iridate SrIrO3 and manganite La0.7Sr0.3MnO3 on a (110)NdGaO3 single-crystal substrate was carried out using magnetron sputtering at a high temperature in a mixture of argon and oxygen gases. The spin mixing conductance, which determines the amplitude of the spin current and generally has real Re g↑↓ and imaginary Im g↑↓ parts, was determined from the frequency dependence of the FMR spectrum of the La0.7Sr0.3MnO3 film and the heterostructures. It is shown that the Im g↑↓ quantity can play an important role in determining the spin Hall angle (θSH) from the angular dependence of the spin magnetoresistance. For the SrIrO3/La0.7Sr0.3MnO3 heterostructures, θSH turns out to be significantly higher (almost an order of magnitude) than that for the Pt/La0.7Sr0.3MnO3 heterostructure.
- Publication
Journal of Surface Investigation: X-Ray, Synchrotron & Neutron Techniques, 2024, Vol 18, Issue 1, p210
- ISSN
1027-4510
- Publication type
Article
- DOI
10.1134/S1027451024010336