Spin-orbit torque switching in perpendicular Y3Fe5O12/Pt bilayer

Guo, Chenyang; Wan, Caihua; Zhao, Mingkun; Wu, Hao; Fang, Chi; Yan, Z. R.; Feng, J. F.; Liu, H. F.; Han, X. F.

doi:10.1063/1.5098033

Cited by 56 publications

(22 citation statements)

References 28 publications

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“…Ferrimagnetic insulators (FMIs) have attracted intensive studies for the application in spintronic devices due to their potential advantages. [ 1–23 ] Their low damping property, long spin transmission length, and absence of Ohmic loss ensure high‐speed response and low‐energy consumption in the future memory and logic devices. [ 24–26 ] Moreover, although a current cannot flow in the FMIs, their magnetization can be detected and manipulated electrically in heavy metal (HM)/FMI bilayers.…”

Section: Introductionmentioning

confidence: 99%

Spin‐Orbit Torque and Interfacial Dzyaloshinskii–Moriya Interaction in Heavy Metal/Ferrimagnetic Insulator Deposited by Magnetron Sputtering

Chen

et al. 2021

Adv Elect Materials

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Ferrimagnetic insulators (FMIs) have abundant advantages for the application in spintronic devices, which have attracted intensive studies. However, in most previous studies on heavy metal (HM)/FMI bilayers, the FMI layers are deposited by pulsed laser deposition (PLD), and the HM layers are deposited by magnetron sputtering. This will cause the interfacial contamination due to the inevitable vacuum breaking, and then significantly affect the spin‐orbit torque (SOT) generation and the Dzyaloshinskii–Moriya interaction (DMI) in the HM/FMI bilayers. In this work, the SOT and DMI in the HM/FMI bilayers deposited by magnetron sputtering without vacuum breaking are studied. The successful fabrication of the Tm3Fe5O12 (TmIG) layer, a typical FMI, with good crystallinity and perpendicular magnetic anisotropy (PMA) by magnetron sputtering is first demonstrated. Then by systematically varying the TmIG thickness, the SOT and DMI in the Pt/TmIG bilayers are studied. It is shown that the effective spin Hall angle in the Pt/TmIG bilayers is much larger than most previously reported values. It is further demonstrated that the DMI constant scales linearly with the inverse of the TmIG thickness, indicating the interfacial origin of the DMI. The study provides a piece of information for the basic understandings of the SOT and DMI in the HM/FMI bilayers.

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Section: Introductionmentioning

confidence: 99%

Spin‐Orbit Torque and Interfacial Dzyaloshinskii–Moriya Interaction in Heavy Metal/Ferrimagnetic Insulator Deposited by Magnetron Sputtering

Chen

et al. 2021

Adv Elect Materials

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“…Very recently, magnon-torque-induced magnetization switching through an antiferromagnetic insulator was archived by Wang et al 13 and Wang et al 14 They demonstrated that the magnon torque is sufficient to control the magnetization, which is comparable with traditional electrical spin torque ratios. Also, pioneering works on spin orbit torque (SOT) switching for TmIG/Pt 15 and YIG/Pt 16 indicated that spin torque inside the magnetic insulator can only be magnonmediate. These studies inspire us to explore the interlayer transmission of magnons in dynamic SV structures.…”

mentioning

confidence: 99%

Interlayer transmission of magnons in dynamic spin valve structures

Chen

Ruan

Yuan

et al. 2020

Applied Physics Letters

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“…[36,[40][41][42][43][44][121][122][123][124][125][126][127][128][129][130][131][132][133][134][135] In the past years, SMR is prominently used for the investigation of AFIs, which enables us to track the orientation of the Néel order parameter and detect magnetic domains in this class of materials. [124,[131][132][133][134][136][137][138][139][140][141][142][143][144][145] In addition, based on the SMR effect, it is possible to quantify spin-orbit torque effects [36,[146][147][148][149][150][151] and investigate topological spin textures in MOIs. [152][153][154][155][156]…”

Section: Electrical Injection and Detection Of Magnonsmentioning

confidence: 99%

All‐Electrical Magnon Transport Experiments in Magnetically Ordered Insulators

Althammer

2021

Physica Rapid Research Ltrs

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Angular momentum transport is one of the cornerstones of spintronics. Spin angular momentum is not only transported by mobile charge carriers but also by the quantized excitations of the magnetic lattice in magnetically ordered systems. In this regard, magnetically ordered insulators (MOIs) provide a platform for magnon spin transport experiments without additional contributions from spin currents carried by mobile electrons. In combination with charge‐to‐spin current conversion processes in conductors with finite spin–orbit coupling, it is possible to realize all‐electrical magnon transport schemes in thin‐film heterostructures. Herein, an insight into such experiments and recent breakthroughs achieved is provided. Special attention is given to charge‐current‐based manipulation via an adjacent normal metal of magnon transport in MOIs in terms of spin‐transfer torque. Moreover, the influence of two magnon modes with opposite spin in antiferromagnetic insulators on all‐electrical magnon transport experiments is discussed.

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Spin-orbit torque switching in perpendicular Y3Fe5O12/Pt bilayer

Cited by 56 publications

References 28 publications

Spin‐Orbit Torque and Interfacial Dzyaloshinskii–Moriya Interaction in Heavy Metal/Ferrimagnetic Insulator Deposited by Magnetron Sputtering

Spin‐Orbit Torque and Interfacial Dzyaloshinskii–Moriya Interaction in Heavy Metal/Ferrimagnetic Insulator Deposited by Magnetron Sputtering

Interlayer transmission of magnons in dynamic spin valve structures

All‐Electrical Magnon Transport Experiments in Magnetically Ordered Insulators

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