2022
DOI: 10.1002/aelm.202200514
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Implementing Complex Oxides for Efficient Room‐Temperature Spin–Orbit Torque Switching

Abstract: Complex oxides hosting 4d and 5d cations with significant spin–orbit coupling have recently been shown as promising materials for efficient spin‐charge interconversion. Through interfacing 4d and 5d oxides with magnet layers, a large spin–orbit torque (SOT) is reported. However, a room‐temperature SOT switching of perpendicular magnetization by using these oxides, which is essential for spintronic devices, is not demonstrated. Here, this is addressed yet missing aspect by studying heterostructures comprised of… Show more

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Cited by 6 publications
(6 citation statements)
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“…5), we estimated the 𝜉𝜉 !,%$ ranging from 0.012 to 0.027. This 𝜉𝜉 !,%$ is comparable to the spin-torque efficiency in our SrRuO3 and those reported by others 42,52 , which demonstrates a strong MST in the tri-layers with multiferroic BiFeO3 exceeding 100 nm. Having established the MST-induced magnetization switching, we proceed to investigate the in-situ voltage control of magnon transport in the proposed MMST device (Fig.…”
supporting
confidence: 89%
“…5), we estimated the 𝜉𝜉 !,%$ ranging from 0.012 to 0.027. This 𝜉𝜉 !,%$ is comparable to the spin-torque efficiency in our SrRuO3 and those reported by others 42,52 , which demonstrates a strong MST in the tri-layers with multiferroic BiFeO3 exceeding 100 nm. Having established the MST-induced magnetization switching, we proceed to investigate the in-situ voltage control of magnon transport in the proposed MMST device (Fig.…”
supporting
confidence: 89%
“…5 ). We estimate a switching current density in SrRuO 3 about (3.05 ± 0.04) × 10 6 A/cm 2 by a parallel resistance model (see Supplementary Note 5 ), which is comparable to that of the heavy metal/ferromagnetic metal system 49 and SrRuO 3 -based heterostructures 50 , 51 . The linear dependence 52 of the threshold switching current on H x plotted in Fig.…”
Section: Resultsmentioning
confidence: 57%
“…Second, SrRuO 3 has been demonstrated to show a strong spin‐Hall effect with large intrinsic spin Hall conductivity and is essential for generating significant magnon‐mediated spin torque. [ 31–33 ]…”
Section: Resultsmentioning
confidence: 99%
“…Second, SrRuO 3 has been demonstrated to show a strong spin-Hall effect with large intrinsic spin Hall conductivity and is essential for generating significant magnon-mediated spin torque. [31][32][33] Figure 2a shows the layered structure of the sample. Epitaxial SrRuO 3 /BiFeO 3 heterostructures were deposited on The 𝜌-T curve also shows a kink around 150 K, corresponding to the paramagnetic-ferromagnetic phase transition of SrRuO 3 .…”
Section: Structure and Ferroelectricity Characterizationsmentioning
confidence: 99%