Corpus ID: 237416596

Robust spin-transfer torque and magnetoresistance in non-collinear antiferromagnetic junctions

@inproceedings{Ghosh2021RobustST,
  title={Robust spin-transfer torque and magnetoresistance in non-collinear antiferromagnetic junctions},
  author={Srikrishna Ghosh and Aur{\'e}lien Manchon and Jakub vZelezn'y},
  year={2021}
}
Ferromagnetic spin-valves and tunneling junctions are crucial for spintronics applications and are one of the most fundamental spintronics devices. Motivated by the potential unique advantages of antiferromagnets for spintronics, we theoretically study here junctions built out of non-collinear antiferromagnets. We demonstrate a large and robust magnetoresistance and spin-transfer torque capable of ultrafast switching between parallel and anti-parallel states of the junction. In addition, we… Expand

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References

SHOWING 1-10 OF 21 REFERENCES
Spin pumping and spin-transfer torques in antiferromagnets.
TLDR
By calculating how electrons scatter off a normal metal-antiferromagnetic interface, pumped spin and staggered spin currents are derived in terms of the staggered field, the magnetization, and their rates of change. Expand
Spin-Polarized Current in Noncollinear Antiferromagnets.
TLDR
It is shown that the same mechanism that leads to the spin-polarized current also leads to a transverse spin current, which has a distinct symmetry and origin from the conventional spin Hall effect. Expand
Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
Spin-orbit coupling in inversion-asymmetric magnetic crystals and structures has emerged as a powerful tool to generate complex magnetic textures, interconvert charge and spin under applied current,Expand
Momentum-Dependent Spin Splitting by Collinear Antiferromagnetic Ordering
We clarify the macroscopic symmetry and microscopic model-parameter conditions for emergence of spin-split electronic band structure in collinear antiferromagnets without atomic spin-orbit coupling.Expand
Current-induced spin–orbit torques
  • P. Gambardella, I. Miron
  • Physics, Medicine
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2011
TLDR
The basic theoretical and experimental arguments supporting a novel current-induced spin torque mechanism taking place in ferromagnetic materials, hereafter named spin–orbit (SO) torque, are reviewed. Expand
Spin Hall effect emerging from a noncollinear magnetic lattice without spin–orbit coupling
The spin Hall effect (SHE), which converts a charge current into a transverse spin current, has long been believed to be a phenomenon induced by spin–orbit coupling. Here, we identify an alternativeExpand
Ab initio giant magnetoresistance and current-induced torques in Cr/Au/Cr multilayers
We report on an ab-initio study of giant magnetoresistance (GMR) and current-induced-torques (CITs) in Cr/Au multilayers that is based on non-equilibrium Green’s functions and spin density functionalExpand
Symmetry and the macroscopic dynamics of antiferromagnetic materials in the presence of spin-polarized current
Antiferromagnetic (AFM) materials with zero or vanishingly small macroscopic magnetization are nowadays the constituent elements of spintronic devices. However, possibility to use them as activeExpand
Anomalous Hall effect arising from noncollinear antiferromagnetism.
TLDR
This work uses symmetry arguments and first-principles electronic structure calculations to predict that Mn3Ir, a high-temperature antiferromagnet that is commonly employed in spin-valve devices, has a large anomalous Hall conductivity. Expand
Spin current generation in organic antiferromagnets
TLDR
It is shown that a class of organic antiferromagnets with checker-plate type molecular arrangements can serve as a spin current generator by applying a thermal gradient or an electric field, even with vanishing spin-orbit coupling. Expand
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