Magnetic anisotropy, damping, and interfacial spin transport in Pt/LSMO bilayers
Source abstract
Abstract
We report ferromagnetic resonance measurements of magnetic anisotropy and damping in epitaxial La0.7Sr0.3MnO3 (LSMO) and Pt capped LSMO thin films on SrTiO3 (001) substrates. The measurements reveal large negative perpendicular magnetic anisotropy and a weaker uniaxial in-plane anisotropy that are unaffected by the Pt cap. The Gilbert damping of the bare LSMO films is found to be low α = 1.9(1) × 10−3, and two-magnon scattering is determined to be significant and strongly anisotropic. The Pt cap increases the damping by 50% due to spin pumping, which is also directly detected via inverse spin Hall effect in Pt. Our work demonstrates efficient spin transport across the Pt/LSMO interface.
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Research context
OpenAlex topics: Magnetic properties of thin films · Magnetic and transport properties of perovskites and related materials · Advanced Memory and Neural Computing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of California 1 Physics and Astronomy, , Irvine, California 92697, USA
Stanford University 2 Geballe Laboratory for Advanced Materials, Department of Applied Physics, , Stanford, California 94305, USA
SLAC National Accelerator Laboratory 3 Stanford Institute for Materials and Energy Sciences, , Menlo Park, California 94025, USA
Funding
FAME, STARnet · NERC, SRC, CNFD · SHINES, DOE, BES
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