Advanced search
2 files | 1.06 MB

Phenomenological description of the nonlocal magnetization relaxation in magnonics, spintronics, and domain-wall dynamics

Author
Organization
Abstract
A phenomenological equation called the Landau-Lifshitz-Baryakhtar (LLBar) [Zh. Eksp. Teor. Fiz 87, 1501 (1984) [Sov. Phys. JETP 60, 863 (1984)]] equation, which could be viewed as the combination of the Landau-Lifshitz (LL) equation and an extra "exchange-damping" term, was derived by Baryakhtar using Onsager's relations. We interpret the origin of this exchange damping as nonlocal damping by linking it to the spin current pumping. The LLBar equation is investigated numerically and analytically for the spin-wave decay and domain-wall motion. Our results show that the lifetime and propagation length of short-wavelength magnons in the presence of nonlocal damping could be much smaller than those given by the LL equation. Furthermore, we find that both the domain-wall mobility and the Walker breakdown field are strongly influenced by the nonlocal damping.
Keywords
Electronic, Optical and Magnetic Materials, Condensed Matter Physics, MICROMAGNETIC SIMULATIONS, MAGNETS, MOTION

Downloads

  • 1508.01478.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 565.95 KB
  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 496.71 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Wang, Weiwei, Mykola Dvornik, Marc-Antonio Bisotti, Dmitri Chernyshenko, Marijan Beg, Maximilian Albert, Arne Vansteenkiste, et al. 2015. “Phenomenological Description of the Nonlocal Magnetization Relaxation in Magnonics, Spintronics, and Domain-wall Dynamics.” Physical Review B 92 (5).
APA
Wang, Weiwei, Dvornik, M., Bisotti, M.-A., Chernyshenko, D., Beg, M., Albert, M., Vansteenkiste, A., et al. (2015). Phenomenological description of the nonlocal magnetization relaxation in magnonics, spintronics, and domain-wall dynamics. PHYSICAL REVIEW B, 92(5).
Vancouver
1.
Wang W, Dvornik M, Bisotti M-A, Chernyshenko D, Beg M, Albert M, et al. Phenomenological description of the nonlocal magnetization relaxation in magnonics, spintronics, and domain-wall dynamics. PHYSICAL REVIEW B. 2015;92(5).
MLA
Wang, Weiwei et al. “Phenomenological Description of the Nonlocal Magnetization Relaxation in Magnonics, Spintronics, and Domain-wall Dynamics.” PHYSICAL REVIEW B 92.5 (2015): n. pag. Print.
@article{8501633,
  abstract     = {A phenomenological equation called the Landau-Lifshitz-Baryakhtar (LLBar) [Zh. Eksp. Teor. Fiz 87, 1501 (1984) [Sov. Phys. JETP 60, 863 (1984)]] equation, which could be viewed as the combination of the Landau-Lifshitz (LL) equation and an extra "exchange-damping" term, was derived by Baryakhtar using Onsager's relations. We interpret the origin of this exchange damping as nonlocal damping by linking it to the spin current pumping. The LLBar equation is investigated numerically and analytically for the spin-wave decay and domain-wall motion. Our results show that the lifetime and propagation length of short-wavelength magnons in the presence of nonlocal damping could be much smaller than those given by the LL equation. Furthermore, we find that both the domain-wall mobility and the Walker breakdown field are strongly influenced by the nonlocal damping.},
  articleno    = {054430},
  author       = {Wang, Weiwei and Dvornik, Mykola and Bisotti, Marc-Antonio and Chernyshenko, Dmitri and Beg, Marijan and Albert, Maximilian and Vansteenkiste, Arne and Van Waeyenberge, Bartel and Kuchko, Andriy N and Kruglyak, Volodymyr V and Fangohr, Hans},
  issn         = {1098-0121},
  journal      = {PHYSICAL REVIEW B},
  keywords     = {Electronic,Optical and Magnetic Materials,Condensed Matter Physics,MICROMAGNETIC SIMULATIONS,MAGNETS,MOTION},
  language     = {eng},
  number       = {5},
  pages        = {10},
  title        = {Phenomenological description of the nonlocal magnetization relaxation in magnonics, spintronics, and domain-wall dynamics},
  url          = {http://dx.doi.org/10.1103/physrevb.92.054430},
  volume       = {92},
  year         = {2015},
}

Altmetric
View in Altmetric
Web of Science
Times cited: