Giant anomalous charge-spin conversion at Co/Pb(Mg1/3Nb2/3)O3–Pb0.7Ti0.3O3 interfaces
An efficient out-of-plane anti-damping spin–orbit torque (SOT) is in great demand for high-density spintronic devices with perpendicular magnetic anisotropy. Despite its importance, direct realization of such SOT in a single magnetic layer is scarce and has remained challenging. Here, we present exp...
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Veröffentlicht in: | Applied physics letters 2022-07, Vol.121 (2) |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | An efficient out-of-plane anti-damping spin–orbit torque (SOT) is in great demand for high-density spintronic devices with perpendicular magnetic anisotropy. Despite its importance, direct realization of such SOT in a single magnetic layer is scarce and has remained challenging. Here, we present experimental evidence uncovering unconventional out-of-plane anti-damping torques in the Co film deposited on the ferroelectric Pb(Mg1/3Nb2/3)O3–Pb0.7Ti0.3O3 (PMN–PT) substrate. We show via spin-torque ferromagnetic resonance that both Rashba- and unconventional-type SOT give rise to a high-efficient charge-to-spin conversion. The strong magnetoelectric effect at the Co/PMN-PT interface allows further directly electric-field control of the conversion. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/5.0098832 |