Nonlocal Uniform-Mode Ferromagnetic Resonance Spin Pumping.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 32955896.
- Also identified by DOI 10.1021/acs.nanolett.0c02640.
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Abstract
Nonlocal spin transport using lateral structures is attractive for spintronic devices. Typically, a spin current is generated by a ferromagnetic (FM) or a heavy metal (HM) electrode in a nonlocal structure, which can be detected by another FM or HM electrode. Here, we report a new nonlocal spin injection scheme using uniform-mode ferromagnetic resonance (FMR) spin pumping in Pt/Y<sub>3</sub>Fe<sub>5</sub>O<sub>12</sub> (YIG) lateral structures. This scheme is enabled by well-separated resonant fields of Pt/YIG and bare YIG due to substantial change of anisotropy in YIG films induced by a Pt overlayer, allowing for clearly distinguishable local and nonlocal spin pumping. Our results show that the spin decay length of nonlocal uniform-mode spin pumping in 20 nm YIG films is 2.1 μm at room temperature.