Spin-wave propagation in cubic anisotropic materials

Koji Sekiguchi, Seo Won Lee, Hiroaki Sukegawa, Nana Sato, Se Hyeok Oh, Robert D. McMichael, Kyung Jin Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The information carrier of modern technologies is the electron charge, whose transport inevitably generates Joule heating. Spin waves, the collective precessional motion of electron spins, do not involve moving charges and thus avoid Joule heating. In this respect, magnonic devices in which the information is carried by spin waves attract interest for low-power computing. However, implementation of magnonic devices for practical use suffers from a low spin-wave signal and on/off ratio. Here, we demonstrate that cubic anisotropic materials can enhance spin-wave signals by improving spin-wave amplitude as well as group velocity and attenuation length. Furthermore, cubic anisotropic materials show an enhanced on/off ratio through a laterally localized edge mode, which closely mimics the gate-controlled conducting channel in traditional field-effect transistors. These attractive features of cubic anisotropic materials will invigorate magnonics research towards wave-based functional devices.

Original languageEnglish
Pages (from-to)e392
JournalNPG Asia Materials
Volume9
Issue number6
DOIs
Publication statusPublished - 2017 Jun 1

Fingerprint

Spin Waves
Anisotropic Material
Spin waves
Wave propagation
Wave Propagation
magnons
wave propagation
Joule Heating
Joule heating
Electron
Collective Motion
Charge Transport
Field-effect Transistor
Electrons
Group Velocity
Field effect transistors
group velocity
electron spin
Attenuation
Charge transfer

ASJC Scopus subject areas

  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Sekiguchi, K., Lee, S. W., Sukegawa, H., Sato, N., Oh, S. H., McMichael, R. D., & Lee, K. J. (2017). Spin-wave propagation in cubic anisotropic materials. NPG Asia Materials, 9(6), e392. https://doi.org/10.1038/am.2017.87

Spin-wave propagation in cubic anisotropic materials. / Sekiguchi, Koji; Lee, Seo Won; Sukegawa, Hiroaki; Sato, Nana; Oh, Se Hyeok; McMichael, Robert D.; Lee, Kyung Jin.

In: NPG Asia Materials, Vol. 9, No. 6, 01.06.2017, p. e392.

Research output: Contribution to journalArticle

Sekiguchi, K, Lee, SW, Sukegawa, H, Sato, N, Oh, SH, McMichael, RD & Lee, KJ 2017, 'Spin-wave propagation in cubic anisotropic materials', NPG Asia Materials, vol. 9, no. 6, pp. e392. https://doi.org/10.1038/am.2017.87
Sekiguchi K, Lee SW, Sukegawa H, Sato N, Oh SH, McMichael RD et al. Spin-wave propagation in cubic anisotropic materials. NPG Asia Materials. 2017 Jun 1;9(6):e392. https://doi.org/10.1038/am.2017.87
Sekiguchi, Koji ; Lee, Seo Won ; Sukegawa, Hiroaki ; Sato, Nana ; Oh, Se Hyeok ; McMichael, Robert D. ; Lee, Kyung Jin. / Spin-wave propagation in cubic anisotropic materials. In: NPG Asia Materials. 2017 ; Vol. 9, No. 6. pp. e392.
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