Graded-index magnonics
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...
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| Published in: | Физика низких температур |
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| Date: | 2015 |
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| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2015
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/128079 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Graded-index magnonics / C.S. Davies, V.V. Kruglyak // Физика низких температур. — 2015. — Т. 41, № 10. — С. 976–983. — Бібліогр.: 97 назв. — англ. |
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Davies, C.S. Kruglyak, V.V. 2018-01-05T17:41:54Z 2018-01-05T17:41:54Z 2015 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 https://nasplib.isofts.kiev.ua/handle/123456789/128079 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. The research leading to these results has received funding from the Engineering and Physical Sciences Research Council of the United Kingdom under projects EP/L019876/1, EP/L020696/1 and EP/P505526/1. Supporting research data may be accessed at https://ore.exeter.ac.uk/repository/handle/10871/17998. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур К 80-летию уравнения Ландау–Лифшица Graded-index magnonics Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Graded-index magnonics |
| spellingShingle |
Graded-index magnonics Davies, C.S. Kruglyak, V.V. К 80-летию уравнения Ландау–Лифшица |
| title_short |
Graded-index magnonics |
| title_full |
Graded-index magnonics |
| title_fullStr |
Graded-index magnonics |
| title_full_unstemmed |
Graded-index magnonics |
| title_sort |
graded-index magnonics |
| author |
Davies, C.S. Kruglyak, V.V. |
| author_facet |
Davies, C.S. Kruglyak, V.V. |
| topic |
К 80-летию уравнения Ландау–Лифшица |
| topic_facet |
К 80-летию уравнения Ландау–Лифшица |
| publishDate |
2015 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| 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.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/128079 |
| citation_txt |
Graded-index magnonics / C.S. Davies, V.V. Kruglyak // Физика низких температур. — 2015. — Т. 41, № 10. — С. 976–983. — Бібліогр.: 97 назв. — англ. |
| work_keys_str_mv |
AT daviescs gradedindexmagnonics AT kruglyakvv gradedindexmagnonics |
| first_indexed |
2025-12-07T18:04:05Z |
| last_indexed |
2025-12-07T18:04:05Z |
| _version_ |
1850873631976980480 |