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Tunable Snell's law for spin waves in heterochiral magnetic films

(2018) PHYSICAL REVIEW B. 97(10).
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Abstract
Thin ferromagnetic films with an interfacially induced DMI exhibit nontrivial asymmetric dispersion relations that lead to unique and useful magnonic properties. Here we derive an analytical expression for the magnon propagation angle within the micromagnetic framework and show how the dispersion relation can be approximated with a comprehensible geometrical interpretation in the k space of the propagation of spin waves. We further explore the refraction of spin waves at DMI interfaces in heterochiral magnetic films, after deriving a generalized Snell's law tunable by an in-plane magnetic field, that yields analytical expressions for critical incident angles. The found asymmetric Brewster angles at interfaces of regions with different DMI strengths, adjustable by magnetic field, support the conclusion that heterochiral ferromagnetic structures are an ideal platform for versatile spin-wave guides.
Keywords
DZYALOSHINSKII-MORIYA INTERACTION, WEAK FERROMAGNETISM, META-SURFACES, REFLECTION, DYNAMICS

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MLA
Mulkers, Jeroen, Bartel Van Waeyenberge, and Milorad V Milošević. “Tunable Snell’s Law for Spin Waves in Heterochiral Magnetic Films.” PHYSICAL REVIEW B 97.10 (2018): n. pag. Print.
APA
Mulkers, Jeroen, Van Waeyenberge, B., & Milošević, M. V. (2018). Tunable Snell’s law for spin waves in heterochiral magnetic films. PHYSICAL REVIEW B, 97(10).
Chicago author-date
Mulkers, Jeroen, Bartel Van Waeyenberge, and Milorad V Milošević. 2018. “Tunable Snell’s Law for Spin Waves in Heterochiral Magnetic Films.” Physical Review B 97 (10).
Chicago author-date (all authors)
Mulkers, Jeroen, Bartel Van Waeyenberge, and Milorad V Milošević. 2018. “Tunable Snell’s Law for Spin Waves in Heterochiral Magnetic Films.” Physical Review B 97 (10).
Vancouver
1.
Mulkers J, Van Waeyenberge B, Milošević MV. Tunable Snell’s law for spin waves in heterochiral magnetic films. PHYSICAL REVIEW B. 2018;97(10).
IEEE
[1]
J. Mulkers, B. Van Waeyenberge, and M. V. Milošević, “Tunable Snell’s law for spin waves in heterochiral magnetic films,” PHYSICAL REVIEW B, vol. 97, no. 10, 2018.
@article{8557462,
  abstract     = {Thin ferromagnetic films with an interfacially induced DMI exhibit nontrivial asymmetric dispersion relations that lead to unique and useful magnonic properties. Here we derive an analytical expression for the magnon propagation angle within the micromagnetic framework and show how the dispersion relation can be approximated with a comprehensible geometrical interpretation in the k space of the propagation of spin waves. We further explore the refraction of spin waves at DMI interfaces in heterochiral magnetic films, after deriving a generalized Snell's law tunable by an in-plane magnetic field, that yields analytical expressions for critical incident angles. The found asymmetric Brewster angles at interfaces of regions with different DMI strengths, adjustable by magnetic field, support the conclusion that heterochiral ferromagnetic structures are an ideal platform for versatile spin-wave guides.},
  articleno    = {7},
  author       = {Mulkers, Jeroen and Van Waeyenberge, Bartel and Milošević, Milorad V},
  issn         = {2469-9950},
  journal      = {PHYSICAL REVIEW B},
  keywords     = {DZYALOSHINSKII-MORIYA INTERACTION,WEAK FERROMAGNETISM,META-SURFACES,REFLECTION,DYNAMICS},
  language     = {eng},
  number       = {10},
  title        = {Tunable Snell's law for spin waves in heterochiral magnetic films},
  url          = {http://dx.doi.org/10.1103/physrevb.97.104422},
  volume       = {97},
  year         = {2018},
}

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