Large Spin-Orbit-Torque Efficiency and Room-Temperature Magnetization Switching in 
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Co-Fe-B Heterostructures

Li, Peng; Channa, Sanyum; Li, Xiang; Alahmed, Laith; Tang, Chunli; Yi, Di; Riddiford, Lauren; Wisser, Jacob J.; Balakrishnan, Purnima P.; Zheng, Xin Yu; Lü, Di; Vailionis, Artūras; Wang, Shan X.; Suzuki, Yuri

doi:10.1103/physrevapplied.19.024076

Cited by 2 publications

(3 citation statements)

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“…41−45 However, only a limited number of studies have delved into SOT efficiency in the SIO film. 5,25,39 Previous investigations have reported the thickness-dependent SOT efficiency in SIO, 23,46 attributed to octahedral rotation. SRO 27 have established a strong correlation between SOT efficiency and octahedral rotation around its in-plane axes.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Recently, transition-metal perovskite oxides, such as SrIrO 3 (SIO) − and SrRuO 3 (SRO) − have been reported to exhibit strong SOC. The octahedral behavior in perovskite materials plays a critical role in determining the properties of transition metal oxides. − The spin Berry curvature of the bands is a crucial factor in determining the spin Hall conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…Among the transition-metal perovskite oxides, SIO holds a distinctive position. − Due to the heavy element Ir, SOC in SIO is significantly stronger than that in commonly used 3 d elements. , Furthermore, SIO is identified as a Dirac semimetal with a Dirac cone crossing the Fermi level, potentially leading to substantial SOT efficiency. − However, only a limited number of studies have delved into SOT efficiency in the SIO film. ,, Previous investigations have reported the thickness-dependent SOT efficiency in SIO, , attributed to octahedral rotation. Theories and experiments on SRO have established a strong correlation between SOT efficiency and octahedral rotation around its in-plane axes.…”

Section: Introductionmentioning

confidence: 99%

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Highly Energy-Efficient Spin Current Generation in SrIrO₃ by Manipulating the Octahedral Rotation

Zhang,

Shi,

Zheng

et al. 2023

ACS Appl. Mater. Interfaces

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Materials with strong spin−orbit coupling (SOC) have been continuously attracting intensive attention due to their promising application in energy-efficient, high-density, and nonvolatile spintronic devices. Particularly, transition-metal perovskite oxides with strong SOC have been demonstrated to exhibit efficient charge−spin interconversion. In this study, we systematically investigated the impact of epitaxial strain on the spin−orbit torque (SOT) efficiency in the SrIrO 3 (SIO)/Ni 81 Fe 19 (Py) bilayer. The results reveal that the SOT efficiency is strongly related to the octahedral rotation around the in-plane axes of the single-crystal SIO. By modulating the epitaxial strain using different substrates, the SOT efficiency can be remarkably improved from 0.15 to 1.45. This 10-fold enhancement of SOT efficiency suggests that modulating the epitaxial strain is an efficient approach to control the SOT efficiency in complex oxide-based heterostructures. Our work may have the potential to advance the application of complex oxides in energy-efficient spintronic devices.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Highly Energy-Efficient Spin Current Generation in SrIrO₃ by Manipulating the Octahedral Rotation

Zhang,

Shi,

Zheng

et al. 2023

ACS Appl. Mater. Interfaces

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Tuning Stoichiometry for Enhanced Spin‐Charge Interconversion in Transition Metal Oxides

Chen,

Jiang,

Zhang

et al. 2024

Adv Elect Materials

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Interconversion of spin and charge current provides a key route for low‐power spin memory and logic devices. Recent advances have revealed efficient spin‐charge interconversion in 4d and 5d transition metal oxides. However, the strategies to tune the conversion efficiency, essential for the generation and detection of spin‐current, are limited to engineering the crystalline structure of oxides. Here, a simple and broadly applicable approach by tuning the cation stoichiometry is reported. In the model system of 5d perovskite SrIrO3, it is shown that a significant Ir cation deficiency is induced by controlling the oxygen partial pressure during deposition. This off‐stoichiometry leads to an enhancement of the spin‐to‐charge conversion efficiency by around three times, accompanied by an increase of electrical resistivity at room temperature. Furthermore, a significant increase of inverse spin Hall voltage is observed by implementing the Ir‐deficient SrIr1‐xO3, highlighting the promising role of atomic defects in developing oxides for sensitive spin‐current detection. This work opens a new pathway to engineer the spin‐charge interconversion efficiency in oxides and offers new opportunities to integrate complex oxides in energy‐efficient spintronic devices.

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Large Spin-Orbit-Torque Efficiency and Room-Temperature Magnetization Switching in SrIrO3/ Co-Fe-B Heterostructures

Cited by 2 publications

References 46 publications

Highly Energy-Efficient Spin Current Generation in SrIrO₃ by Manipulating the Octahedral Rotation

Highly Energy-Efficient Spin Current Generation in SrIrO₃ by Manipulating the Octahedral Rotation

Tuning Stoichiometry for Enhanced Spin‐Charge Interconversion in Transition Metal Oxides

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Large Spin-Orbit-Torque Efficiency and Room-Temperature Magnetization Switching in SrIrO3/ Co-Fe-B Heterostructures

Cited by 2 publications

References 46 publications

Highly Energy-Efficient Spin Current Generation in SrIrO3 by Manipulating the Octahedral Rotation

Highly Energy-Efficient Spin Current Generation in SrIrO3 by Manipulating the Octahedral Rotation

Tuning Stoichiometry for Enhanced Spin‐Charge Interconversion in Transition Metal Oxides

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Product

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Highly Energy-Efficient Spin Current Generation in SrIrO₃ by Manipulating the Octahedral Rotation

Highly Energy-Efficient Spin Current Generation in SrIrO₃ by Manipulating the Octahedral Rotation