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Updated: Sep 5, 2026

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7−δ/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates
Published on: April 12, 2019
Enhanced spin-to-charge conversion in epitaxial La0.67Sr0.33MnO3/NdNiO3 bilayers at the nickelate metal-insulator
Biswajit Sahoo1,2, Sarmistha Das2, Akilan K3
1Center for Memory and Recording Research, University of California San Diego, La Jolla, CA, USA.
Abstract:
Phase transition materials such as NdNiO3 (NNO) when coupled with low damping ferromagnets such as La0.67Sr0.33MnO3 (LSMO) hold the promise for developing new multi-functional material systems harnessing the interplay of charge, spin, and orbital degrees of freedom. In this study, we probe the evolution of spin-to-charge conversion in epitaxial all-oxide LSMO (12 nm)/NNO (4, 8, and 16 nm) bilayers. Using spin pumping ferromagnetic resonance, we track the spin-to-charge conversion within the NNO layer through the paramagnetic metal to antiferromagnetic insulator transition and observe a pronounced enhancement of the inverse spin Hall effect signal at the onset of this phase transition. We attribute this enhancement to the electronic and magnetic disorder in NNO at the first-order phase transition, thereby providing insights into the mechanism of spin transport through the phase transition. The tunability of spin-to-charge conversion in this low damping bilayer system offers a pathway for developing reconfigurable, energy-efficient spintronic devices.
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