Publisher's Note: Spin transfer torque in antiferromagnetic spin valves: From clean to disordered regimes [Phys. Rev. B<b>89</b>, 174430 (2014)]

Saidaoui, Hamed Ben Mohamed; Manchon, Aurélien; Waintal, Xavier

doi:10.1103/physrevb.90.019901

Cited by 20 publications

(29 citation statements)

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“…(f) Spin-wave frequency f vs J . Modeling parameters are [26]: d = 0.4 nm, A sim = 16.0 meV, K sim = 0.04 meV, μ = 3.45μ B , θ SH = 0.1, α = 0.001, and χ = 0 (i.e., B F = 0) or 23 (i.e., B F ≠ 0 [27]). We use D sim = 0 or D sim = 2.0 meV, obtaining a Bloch or Néel wall, respectivel…”

Section: Figmentioning

confidence: 99%

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Antiferromagnetic Domain Wall Motion Driven by Spin-Orbit Torques

et al. 2016

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We theoretically investigate dynamics of antiferromagnetic domain walls driven by spin-orbit torques in antiferromagnet/heavy metal bilayers. We show that spin-orbit torques drive antiferromagnetic domain walls much faster than ferromagnetic domain walls. As the domain wall velocity approaches the maximum spin-wave group velocity, the domain wall undergoes Lorentz contraction and emits spin-waves in the terahertz frequency range. The interplay between spin-orbit torques and the relativistic dynamics of antiferromagnetic domain walls leads to the efficient manipulation of antiferromagnetic spin textures and paves the way for the generation of high frequency signals from antiferromagnets.

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Section: Figmentioning

confidence: 99%

“…SOT-driven antiferromagnetic domain wall motion for B F ≠ 0 (χ = 23 [27]): (a) Domain wall velocity υ DW vs current density J [28]. Inset shows the domain wall angle ϕ for an antiferromagnetic domain wall that is initially of Bloch type.…”

Section: Figmentioning

confidence: 99%

Antiferromagnetic Domain Wall Motion Driven by Spin-Orbit Torques

et al. 2016

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“…Antiferromagnets (AFs)-based spintronics is a branch of science that explores spin dependent transport devices using AFs instead of ferromagnets (F). 1,2 It is currently considered as a significant exploratory topic in spintronics [3][4][5][6] since AFs exhibit no stray fields, which is beneficial for ultimate downsize scalability. In particular, a first theoretical toy model showed AF spin transfer torque (STT) and giant magnetoresistance (GMR) for metallic AF/PM/AF multilayers, 7 where PM stands for a paramagnetic metallic spacer.…”

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confidence: 99%

Spin-dependent transport in antiferromagnetic tunnel junctions

Merodio

Kalitsov

Béa

et al. 2014

Applied Physics Letters

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“…(1) is directly applied to AFMs, one would conclude that there can be no STT in AFMs where P becomes zero or vanishingly small; recent research has been confirming that this is of course not the case. The study of STTs involving AMF materials was started by investigation of current-driven effects in spin valves or multilayer systems where each AFM layer carries a single domain [4][5][6][7][8][9][10]. Theoretical studies have unveiled an important role of the STT also in textured AFMs as in textured FMs [10][11][12][13][14][15]; Xu et al [10] examined the current-driven dynamics of a domain wall (DW) in a two-sublattice AFM metal by ab initio calculations.…”

Section: Introductionmentioning

confidence: 99%

Spin-transfer torques in antiferromagnetic textures: Efficiency and quantification method

2016

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We formulate a theory of spin-transfer torques in textured antiferromagnets, which covers the small to large limits of the exchange coupling energy relative to the kinetic energy of the intersublattice electron dynamics. Our theory suggests a natural definition of the efficiency of spin-transfer torques in antiferromagnets in terms of welldefined material parameters, revealing that the charge current couples predominantly to the antiferromagnetic order parameter and the sublattice-canting moment in, respectively, the limits of large and small exchange coupling. The effects can be quantified by analyzing the antiferromagnetic spin-wave dispersions in the presence of charge current: in the limit of large exchange coupling the spin-wave Doppler shift always occurs, whereas, in the opposite limit, the only spin-wave modes to react to the charge current are ones that carry a pronounced sublattice-canting moment. The findings offer a framework for understanding and designing spin-transfer torques in antiferromagnets belonging to different classes of sublattice structures such as, e.g., bipartite and layered antiferromagnets.

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Publisher's Note: Spin transfer torque in antiferromagnetic spin valves: From clean to disordered regimes [Phys. Rev. B89, 174430 (2014)]

Cited by 20 publications

References 0 publications

Antiferromagnetic Domain Wall Motion Driven by Spin-Orbit Torques

Antiferromagnetic Domain Wall Motion Driven by Spin-Orbit Torques

Spin-dependent transport in antiferromagnetic tunnel junctions

Spin-transfer torques in antiferromagnetic textures: Efficiency and quantification method

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