Spin Transport and Dynamics in Multilayer Magnetic Nanostructures

Andrii Korostil; Mykola Krupa

doi:doi:10.11648/j.nano.20180601.13

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Spin Transport and Dynamics in Multilayer Magnetic Nanostructures

Andrii Korostil, Mykola Krupa

Published in American Journal of Nano Research and Applications (Volume 6, Issue 1)

Received: 26 March 2018 Accepted: 13 April 2018 Published: 11 May 2018

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Abstract

The interconnection between the spin current and spin dynamics via the spin-dependent scattering and an accompanying by spin torque effect in ferromagnetic/normal metal based magnetic multilayer nanostructures is studied including a high fast out-of-equilibrium spin dynamics. Features of the spin transport through interfaces and its impact on spin dynamics are described on the base of the scattering matrix formalism for spin flows. The dependence of the spin torque effect on conductance character of the normal metal layers is considered. The exchange processes between the itinerant s and the localized d electrons are described by kinetic rate equations for electron-magnon spin-flop scattering. It is shown that the magnon distribution function remains nonthermalized on the relevant time scales of the demagnetization process, and the relaxation of the out-of-equilibrium spin accumulation among itinerant electrons provides the principal channel for dissipation of spin angular momentum from the combined electronic system.

Published in	American Journal of Nano Research and Applications (Volume 6, Issue 1)
DOI	10.11648/j.nano.20180601.13
Page(s)	21-33
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

Magnetic Nanostructures, Spin Transport, Scattering, Spin Torque Effect, Electron-Magnon Spin-flop Scattering, Nonequilibrium Spin Dynamics

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Andrii Korostil, Mykola Krupa. (2018). Spin Transport and Dynamics in Multilayer Magnetic Nanostructures. American Journal of Nano Research and Applications, 6(1), 21-33. https://doi.org/10.11648/j.nano.20180601.13

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ACS Style

Andrii Korostil; Mykola Krupa. Spin Transport and Dynamics in Multilayer Magnetic Nanostructures. Am. J. Nano Res. Appl. 2018, 6(1), 21-33. doi: 10.11648/j.nano.20180601.13

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AMA Style

Andrii Korostil, Mykola Krupa. Spin Transport and Dynamics in Multilayer Magnetic Nanostructures. Am J Nano Res Appl. 2018;6(1):21-33. doi: 10.11648/j.nano.20180601.13

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@article{10.11648/j.nano.20180601.13,
  author = {Andrii Korostil and Mykola Krupa},
  title = {Spin Transport and Dynamics in Multilayer Magnetic Nanostructures},
  journal = {American Journal of Nano Research and Applications},
  volume = {6},
  number = {1},
  pages = {21-33},
  doi = {10.11648/j.nano.20180601.13},
  url = {https://doi.org/10.11648/j.nano.20180601.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.nano.20180601.13},
  abstract = {The interconnection between the spin current and spin dynamics via the spin-dependent scattering and an accompanying by spin torque effect in ferromagnetic/normal metal based magnetic multilayer nanostructures is studied including a high fast out-of-equilibrium spin dynamics. Features of the spin transport through interfaces and its impact on spin dynamics are described on the base of the scattering matrix formalism for spin flows. The dependence of the spin torque effect on conductance character of the normal metal layers is considered. The exchange processes between the itinerant s and the localized d electrons are described by kinetic rate equations for electron-magnon spin-flop scattering. It is shown that the magnon distribution function remains nonthermalized on the relevant time scales of the demagnetization process, and the relaxation of the out-of-equilibrium spin accumulation among itinerant electrons provides the principal channel for dissipation of spin angular momentum from the combined electronic system.},
 year = {2018}
}

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TY  - JOUR
T1  - Spin Transport and Dynamics in Multilayer Magnetic Nanostructures
AU  - Andrii Korostil
AU  - Mykola Krupa
Y1  - 2018/05/11
PY  - 2018
N1  - https://doi.org/10.11648/j.nano.20180601.13
DO  - 10.11648/j.nano.20180601.13
T2  - American Journal of Nano Research and Applications
JF  - American Journal of Nano Research and Applications
JO  - American Journal of Nano Research and Applications
SP  - 21
EP  - 33
PB  - Science Publishing Group
SN  - 2575-3738
UR  - https://doi.org/10.11648/j.nano.20180601.13
AB  - The interconnection between the spin current and spin dynamics via the spin-dependent scattering and an accompanying by spin torque effect in ferromagnetic/normal metal based magnetic multilayer nanostructures is studied including a high fast out-of-equilibrium spin dynamics. Features of the spin transport through interfaces and its impact on spin dynamics are described on the base of the scattering matrix formalism for spin flows. The dependence of the spin torque effect on conductance character of the normal metal layers is considered. The exchange processes between the itinerant s and the localized d electrons are described by kinetic rate equations for electron-magnon spin-flop scattering. It is shown that the magnon distribution function remains nonthermalized on the relevant time scales of the demagnetization process, and the relaxation of the out-of-equilibrium spin accumulation among itinerant electrons provides the principal channel for dissipation of spin angular momentum from the combined electronic system.
VL  - 6
IS  - 1
ER  -

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Author Information

Andrii Korostil

Department of Magnetic Mesoscopic Materials and Nanocrystalline Structures, Institute of Magnetism, Kyiv, Ukraine
Mykola Krupa

Department of Magnetic Mesoscopic Materials and Nanocrystalline Structures, Institute of Magnetism, Kyiv, Ukraine

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APA Style

Andrii Korostil, Mykola Krupa. (2018). Spin Transport and Dynamics in Multilayer Magnetic Nanostructures. American Journal of Nano Research and Applications, 6(1), 21-33. https://doi.org/10.11648/j.nano.20180601.13

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ACS Style

Andrii Korostil; Mykola Krupa. Spin Transport and Dynamics in Multilayer Magnetic Nanostructures. Am. J. Nano Res. Appl. 2018, 6(1), 21-33. doi: 10.11648/j.nano.20180601.13

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AMA Style

Andrii Korostil, Mykola Krupa. Spin Transport and Dynamics in Multilayer Magnetic Nanostructures. Am J Nano Res Appl. 2018;6(1):21-33. doi: 10.11648/j.nano.20180601.13

Copy | Download

@article{10.11648/j.nano.20180601.13,
  author = {Andrii Korostil and Mykola Krupa},
  title = {Spin Transport and Dynamics in Multilayer Magnetic Nanostructures},
  journal = {American Journal of Nano Research and Applications},
  volume = {6},
  number = {1},
  pages = {21-33},
  doi = {10.11648/j.nano.20180601.13},
  url = {https://doi.org/10.11648/j.nano.20180601.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.nano.20180601.13},
  abstract = {The interconnection between the spin current and spin dynamics via the spin-dependent scattering and an accompanying by spin torque effect in ferromagnetic/normal metal based magnetic multilayer nanostructures is studied including a high fast out-of-equilibrium spin dynamics. Features of the spin transport through interfaces and its impact on spin dynamics are described on the base of the scattering matrix formalism for spin flows. The dependence of the spin torque effect on conductance character of the normal metal layers is considered. The exchange processes between the itinerant s and the localized d electrons are described by kinetic rate equations for electron-magnon spin-flop scattering. It is shown that the magnon distribution function remains nonthermalized on the relevant time scales of the demagnetization process, and the relaxation of the out-of-equilibrium spin accumulation among itinerant electrons provides the principal channel for dissipation of spin angular momentum from the combined electronic system.},
 year = {2018}
}

Copy | Download

TY  - JOUR
T1  - Spin Transport and Dynamics in Multilayer Magnetic Nanostructures
AU  - Andrii Korostil
AU  - Mykola Krupa
Y1  - 2018/05/11
PY  - 2018
N1  - https://doi.org/10.11648/j.nano.20180601.13
DO  - 10.11648/j.nano.20180601.13
T2  - American Journal of Nano Research and Applications
JF  - American Journal of Nano Research and Applications
JO  - American Journal of Nano Research and Applications
SP  - 21
EP  - 33
PB  - Science Publishing Group
SN  - 2575-3738
UR  - https://doi.org/10.11648/j.nano.20180601.13
AB  - The interconnection between the spin current and spin dynamics via the spin-dependent scattering and an accompanying by spin torque effect in ferromagnetic/normal metal based magnetic multilayer nanostructures is studied including a high fast out-of-equilibrium spin dynamics. Features of the spin transport through interfaces and its impact on spin dynamics are described on the base of the scattering matrix formalism for spin flows. The dependence of the spin torque effect on conductance character of the normal metal layers is considered. The exchange processes between the itinerant s and the localized d electrons are described by kinetic rate equations for electron-magnon spin-flop scattering. It is shown that the magnon distribution function remains nonthermalized on the relevant time scales of the demagnetization process, and the relaxation of the out-of-equilibrium spin accumulation among itinerant electrons provides the principal channel for dissipation of spin angular momentum from the combined electronic system.
VL  - 6
IS  - 1
ER  -

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