Spin Diffusion and Oscillations of the Magnetization at High-Frequency Spin Injection

Cover Page

Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

The frequency dependence of the nonequilibrium magnetization arising in an electron gas due to spin injection from a half-metallic ferromagnet into a nonmagnetic material is theoretically analyzed. It is shown that high-frequency spin injection gives rise to nonequilibrium magnetization waves, which decay at a length much smaller than the spin diffusion length. This reduces the efficiency of spin injection.

About the authors

N. G. Bebenin

Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Author for correspondence.
Email: bebenin@imp.uran.ru
620108, Yekaterinburg, Russia

References

  1. Spin Physics in Semiconductor, ed. by M. I. Dyakonov, secod edition, Springer International Publishing AG, Cham, Switzerland (2017).
  2. S. Maekawa, S. O. Valenzuela, E. Saitoh, and T. Kimura, Spin Current, Oxford University Press, N.Y. (2017).
  3. A. Hirohata, K. Yamada, Y. Nakatani, I.-L. Prejbeanu, B. Di'eny, P. Pirro, and B. Hillebrands, J. Magn. Magn. Mater. 509, 166711 (2020).
  4. A. I. Nikitchenko and N. A. Pertsev, Phys. Rev. App. 14, 034022 (2020).
  5. E. A. Karashtin and D. A. Tatarskiy, J. Phys.: Condens. Matter. 32, 095303 (2020).
  6. В. Ю. Ирхин, М. И. Кацнельсон, УФН 164, 705 (1994).
  7. В. В. Марченков, В. Ю. Ирхин, ФММ 122, 1221 (2021).
  8. N. G. Bebenin, Solid State Electronics 186, 108174 (2021).
  9. А. Н. Тихонов, А. А. Самарский, Уравнения математической физики, 5-е изд., стереотипное, Главная редакция физико-математической литературы издательства "Наука", М. (1977), 736 с.
  10. N. A. Viglin, V. V. Ustinov, S. O. Demokritov, A. O. Shorikov, N. G. Bebenin, V. M. Tsvelikhovskaya, T. N. Pavlov, and E. I. Patrakov, Phys. Rev. B 96, 235303 (2017).
  11. Н. А. Виглин, Ю. В. Никулин, В. М. Цвелиховская, Т. Н. Павлов, В. В. Проглядо, ЖЭТФ 134, 866 (2022).
  12. O. M. van't Erve, A. L. Friedman, E. Cobas, C. H. Li, J. T. Robinson, and B. T. Jonker, Nat. Nanotechnol. 7, 737 (2012).
  13. E. Shikoh, K. Ando, K. Kubo, E. Saitoh, T. Shinjo, and M. Shiraishi, Phys. Rev. Lett. 110, 127201 (2013).
  14. J.-H. Ku, J. Chang, H. Kim, and J. Eom. Phys. Appl. Phys. Lett. 88, 172510 (2006).
  15. H. Idzuchi, Y. Fukuma, and Y. Otani, Physica E 68, 239 (2015).

Supplementary files

Supplementary Files
Action
1. JATS XML
Download

Copyright (c) 2023 Российская академия наук