Vortices in two-dimensional nanorings studied by means of the dynamical matrix method
This paper concerns an investigation of the spin wave excitations in magnetic nanoparticles. We provide a detailed derivation of the theoretical method for the determination of the normal modes of confined magnetic systems based on a discrete lattice of magnetic moments. The method is based on the...
Збережено в:
| Дата: | 2015 |
|---|---|
| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2015
|
| Назва видання: | Физика низких температур |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/128086 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Vortices in two-dimensional nanorings studied by means of the dynamical matrix method / S. Mamica // Физика низких температур. — 2015. — Т. 41, № 10. — С. 1030–1042. — Бібліогр.: 74 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-128086 |
|---|---|
| record_format |
dspace |
| spelling |
irk-123456789-1280862018-01-06T03:03:06Z Vortices in two-dimensional nanorings studied by means of the dynamical matrix method Mamica, S. К 80-летию уравнения Ландау–Лифшица This paper concerns an investigation of the spin wave excitations in magnetic nanoparticles. We provide a detailed derivation of the theoretical method for the determination of the normal modes of confined magnetic systems based on a discrete lattice of magnetic moments. The method is based on the damping-free Landau–Lifshitz equation and general enough to be utilized for the magnetic system of any dimensionality, magnetic structure, shape, and size. As an example we explore the influence of the competition between exchange and dipolar interactions on the spectrum of normal modes as well as on the stability of the vortex state in two-dimensional nanorings. We show the lowest-frequency mode to be indicative of the dipolar-to-exchange iterations ratio. We also study behavior of the fundamental mode and present the influence of both, the discreteness of the lattice and the dipolar-to-exchange iterations ratio, on its hybridization with azimuthal modes. We complete the paper with a selective review of the spin wave excitations in circular dots to compare with the results obtained for the rings. 2015 Article Vortices in two-dimensional nanorings studied by means of the dynamical matrix method / S. Mamica // Физика низких температур. — 2015. — Т. 41, № 10. — С. 1030–1042. — Бібліогр.: 74 назв. — англ. 0132-6414 PACS: 75.10.Hk, 75.75.Jn, 73.90.+f http://dspace.nbuv.gov.ua/handle/123456789/128086 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 Mamica, S. Vortices in two-dimensional nanorings studied by means of the dynamical matrix method Физика низких температур |
| description |
This paper concerns an investigation of the spin wave excitations in magnetic nanoparticles. We provide a detailed
derivation of the theoretical method for the determination of the normal modes of confined magnetic systems
based on a discrete lattice of magnetic moments. The method is based on the damping-free Landau–Lifshitz
equation and general enough to be utilized for the magnetic system of any dimensionality, magnetic structure,
shape, and size. As an example we explore the influence of the competition between exchange and dipolar interactions
on the spectrum of normal modes as well as on the stability of the vortex state in two-dimensional
nanorings. We show the lowest-frequency mode to be indicative of the dipolar-to-exchange iterations ratio.
We also study behavior of the fundamental mode and present the influence of both, the discreteness of the lattice
and the dipolar-to-exchange iterations ratio, on its hybridization with azimuthal modes. We complete the paper with
a selective review of the spin wave excitations in circular dots to compare with the results obtained for the rings. |
| format |
Article |
| author |
Mamica, S. |
| author_facet |
Mamica, S. |
| author_sort |
Mamica, S. |
| title |
Vortices in two-dimensional nanorings studied by means of the dynamical matrix method |
| title_short |
Vortices in two-dimensional nanorings studied by means of the dynamical matrix method |
| title_full |
Vortices in two-dimensional nanorings studied by means of the dynamical matrix method |
| title_fullStr |
Vortices in two-dimensional nanorings studied by means of the dynamical matrix method |
| title_full_unstemmed |
Vortices in two-dimensional nanorings studied by means of the dynamical matrix method |
| title_sort |
vortices in two-dimensional nanorings studied by means of the dynamical matrix method |
| 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/123456789/128086 |
| citation_txt |
Vortices in two-dimensional nanorings studied by means of the dynamical matrix method / S. Mamica // Физика низких температур. — 2015. — Т. 41, № 10. — С. 1030–1042. — Бібліогр.: 74 назв. — англ. |
| series |
Физика низких температур |
| work_keys_str_mv |
AT mamicas vorticesintwodimensionalnanoringsstudiedbymeansofthedynamicalmatrixmethod |
| first_indexed |
2023-10-18T20:54:35Z |
| last_indexed |
2023-10-18T20:54:35Z |
| _version_ |
1796151425832583168 |