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Graded-index magnonics

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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Main Authors: Davies, C.S., Kruglyak, V.V.
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2015
Series:Физика низких температур
Subjects:
К 80-летию уравнения Ландау–Лифшица
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/128079
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spelling irk-123456789-1280792018-01-06T03:03:13Z Graded-index magnonics Davies, C.S. Kruglyak, V.V. К 80-летию уравнения Ландау–Лифшица 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. 2015 Article 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 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic К 80-летию уравнения Ландау–Лифшица
К 80-летию уравнения Ландау–Лифшица
spellingShingle К 80-летию уравнения Ландау–Лифшица
К 80-летию уравнения Ландау–Лифшица
Davies, C.S.
Kruglyak, V.V.
Graded-index magnonics
Физика низких температур
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.
format Article
author Davies, C.S.
Kruglyak, V.V.
author_facet Davies, C.S.
Kruglyak, V.V.
author_sort Davies, C.S.
title Graded-index magnonics
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
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
publishDate 2015
topic_facet К 80-летию уравнения Ландау–Лифшица
url http://dspace.nbuv.gov.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.
series Физика низких температур
work_keys_str_mv AT daviescs gradedindexmagnonics
AT kruglyakvv gradedindexmagnonics
first_indexed 2023-10-18T20:54:34Z
last_indexed 2023-10-18T20:54:34Z
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