Statistical study of domain-wall depinning induced by magnetic field and current in an epitaxial Co/Ni-based spin-valve wire

Gall, Sylvain Le; Montaigne, F.; Lacour, Daniel; Hehn, Michel; Vernier, N.; Ravelosona, D.; Mangin, Stéphane; Andrieu, S.; Hauet, Thomas

doi:10.1103/physrevb.98.024401

Cited by 8 publications

(7 citation statements)

References 47 publications

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“…Then the depinning possibilities are increased with the rising of T with fixed parameters. [44,45] By the injection of the same pulses, the higher depinning possibility suggests higher domain wall velocity. The domain wall velocity is elevated under rising temperatures.…”

Section: The Controllable Domain Wall Velocity In Various Temperaturementioning

confidence: 99%

Elevation of Domain Wall Velocity Driven by Current Pulses in 2D Ferromagnetic Material Fe₃GeTe₂

Yang

Pei

Yuan

et al. 2022

Adv Funct Materials

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Controlling the domain wall motion in the 2D ferromagnetic materials is significantly critical to the topological spin electronics, non-volatile magnetic memories, and logic devices. The elevation of the domain wall velocity has become an urgent challenge. Herein, a current-pulse-driving strategy is unprecedentedly established to boost the domain wall velocity with an out-of-plane magnetic field and a rising temperature in the Fe 3 GeTe 2 by using the in situ Lorentz Transmission Electron Microscopy. Elevation of domain wall velocity depends on the demagnetization energy increase and Zeeman energy reduction, which originates from the magnetic moments tilting by a non-parallel to the magnetic field. By injecting ≈2000 times of alternative current pulses, a uniform instead of an unsynchronized domain wall velocity is achieved. The key mechanism lies in the decrease of the domain wall number, leading to a reduction in the expansion and compression of the domain areas. Optimized pulse parameters are applied with a critical duration of 60 ns and the density of ≈2 × 10 10 A m −2 , leading to an elevation of velocity from 0.0308 to 0.39 m s −1 . The elevation in magnetic domain wall velocity can be useful for the application of 2D van der Waals ferromagnetic materials in future spintronic devices.

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Section: The Controllable Domain Wall Velocity In Various Temperaturementioning

confidence: 99%

Elevation of Domain Wall Velocity Driven by Current Pulses in 2D Ferromagnetic Material Fe₃GeTe₂

Yang

Pei

Yuan

et al. 2022

Adv Funct Materials

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“…[Co/Ni] multilayers have been reported to have a high spin polarization and their PMA can be easily tuned [16][17][18]. Furthermore, [Co/Ni] multilayers are widely used for current-induced DW motion [6,7,[19][20] and AO-HDS has also been reported in [Co/Ni] [9,10], which makes [Co/Ni] an ideal system for studying the combined effect of STT and AO-HDS. In this paper, we study the STT-driven DW motion assisted by fs laser pulses in perpendicularly magnetized Pt/Co/Ni/Co/Pt thin films.…”

Section: Introductionmentioning

confidence: 99%

Domain-wall motion induced by spin transfer torque delivered by helicity-dependent femtosecond laser

Boyu

Zhao

et al. 2019

Phys. Rev. B

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In magnetic wires with perpendicular anisotropy, moving domain with only current or only circularly polarized light requires a high power. Here, we propose to reduce it by using both short current pulses and femtosecond laser pulses simultaneously. The wires were made out of perpendicularly magnetized film of Pt/Co/Ni/Co/Pt. The displacement of the domain wall is found to be dependent on the laser helicity. Based on a quantitative analysis of the currentinduced domain wall motion, the spin orbit torque contribution can be neglected when compared to the spin transfer torque contribution. The effective field of the spin transfer torque is extracted from the pulsed field domain wall measurements. Finally, our result can be described using the Fatuzzo-Labrune model and considering the effective field due to the polarized laser beam, the effective field due to spin transfer torque, and the Gaussian temperature distribution of the laser spot.

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“…For several decades now, the interaction of an electric current with a ferromagnetic domain structure has been one of the central issues of spintronics [1][2][3][4][5][6][7][8][9][10]. A significant number of mechanisms have been proposed for the effect of current carriers on inhomogeneous magnetization, including adiabatic and nonadiabatic transfer of spin momentum, as well as spin-orbit interaction through the Rashba effect, the Dzyaloshinskii-Moriya interaction, etc.…”

mentioning

confidence: 99%

Exchange spring-like inhomogeneous states in a ferromagnetic wire with current

O.A.

2022

Physics of the Solid State

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Transverse structure of magnetization in a ferromagnetic film induced by magnetic field of electric current has been analyzed. Two steps of arising exchange spring evolution are shown. The first one (weak current) is gradual twisting of magnetization aside from the wire axis. Above some critical current the transient area is compressed and localized near the middle plane. In presence of additional conductive layer the transient structure becomes asymmetric resulting to non-zero lateral component of the net magnetization. It is shown also that the mentioned asymmetry can provide additional displacement of domain walls after the electric current pulses. Keywords: spintronics, domain wall dynamics, exchange spring, ferromagnet.

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Statistical study of domain-wall depinning induced by magnetic field and current in an epitaxial Co/Ni-based spin-valve wire

Cited by 8 publications

References 47 publications

Elevation of Domain Wall Velocity Driven by Current Pulses in 2D Ferromagnetic Material Fe₃GeTe₂

Elevation of Domain Wall Velocity Driven by Current Pulses in 2D Ferromagnetic Material Fe₃GeTe₂

Domain-wall motion induced by spin transfer torque delivered by helicity-dependent femtosecond laser

Exchange spring-like inhomogeneous states in a ferromagnetic wire with current

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Statistical study of domain-wall depinning induced by magnetic field and current in an epitaxial Co/Ni-based spin-valve wire

Cited by 8 publications

References 47 publications

Elevation of Domain Wall Velocity Driven by Current Pulses in 2D Ferromagnetic Material Fe3GeTe2

Elevation of Domain Wall Velocity Driven by Current Pulses in 2D Ferromagnetic Material Fe3GeTe2

Domain-wall motion induced by spin transfer torque delivered by helicity-dependent femtosecond laser

Exchange spring-like inhomogeneous states in a ferromagnetic wire with current

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Elevation of Domain Wall Velocity Driven by Current Pulses in 2D Ferromagnetic Material Fe₃GeTe₂

Elevation of Domain Wall Velocity Driven by Current Pulses in 2D Ferromagnetic Material Fe₃GeTe₂