Abstract
We present spin pumping and inverse spin Hall effect (ISHE) in an epitaxial complex oxide heterostructure. Ferromagnetic La0.7Sr0.3MnO3 (LSMO) is used as a source of spin pumping while the spin sink exhibiting the ISHE consists of SrRuO3 (SRO). SRO is a ferromagnetic oxide with metallic conductivity, however, with a Curie temperature (TC) of 155 K, thus well below room temperature. This choice allows to perform the experiment above and below TC of the SRO and to demonstrate that SRO not only shows an ISHE of a magnitude comparable to Pt (though with opposite sign) in its non magnetic state but also exhibits a finite ISHE even 50 K below TC.
Highlights
The conversion of pure spin currents into charge currents has widely been investigated over the past decade and a large variety of materials have been used in these experiments[1,2,3,4,5]
In our experiments we use a total of nine samples all based on a (30 ± 0.4) nm LSMO layer on NdGaO3 substrate
The magnetic field μ0Hext is swept from below to above the resonance field for the LSMO and the measurement is repeated for different in-plane alignments of the magnetic field in steps of 5°
Summary
In our experiments we use a total of nine samples all based on a (30 ± 0.4) nm LSMO layer on NdGaO3 substrate. In this case, the spin Hall voltage can be written as.
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