Graded-index magnonics
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Graded-index magnonics
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| Creator |
Davies, C.S.
Kruglyak, V.V. |
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| Subject |
К 80-летию уравнения Ландау–Лифшица
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| Description |
The wave solutions of the Landau–Lifshitz equation (spin waves) are characterized by some of the most complex and peculiar dispersion relations among all waves. For example, the spin-wave (“magnonic”) dispersion can range from the parabolic law (typical for a quantum-mechanical electron) at short wavelengths to the nonanalytical linear type (typical for light and acoustic phonons) at long wavelengths. Moreover, the longwavelength magnonic dispersion has a gap and is inherently anisotropic, being naturally negative for a range of relative orientations between the effective field and the spin-wave wave vector. Nonuniformities in the effective field and magnetization configurations enable the guiding and steering of spin waves in a deliberate manner and therefore represent landscapes of graded refractive index (graded magnonic index). By analogy to the fields of graded-index photonics and transformation optics, the studies of spin waves in graded magnonic landscapes can be united under the umbrella of the graded-index magnonics theme and are reviewed here with focus on the challenges and opportunities ahead of this exciting research direction. |
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| Date |
2018-01-05T17:41:54Z
2018-01-05T17:41:54Z 2015 |
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| Type |
Article
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| Identifier |
Graded-index magnonics / C.S. Davies, V.V. Kruglyak // Физика низких температур. — 2015. — Т. 41, № 10. — С. 976–983. — Бібліогр.: 97 назв. — англ.
0132-6414 http://dspace.nbuv.gov.ua/handle/123456789/128079 |
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| Language |
en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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