Vortex-antivortex dynamics driven by spin-torque in a nanocontact
A spin-polarized current in a nanocontact has been shown to induce the formation of a magnetic vortex at the nanocontact by the Oersted field, and spin-torque drives the vortex core in an elliptical orbit about the nanocontact. For the case of an external in-plane magnetic field in an extended fre...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2015 |
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| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2015
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/128083 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Vortex-antivortex dynamics driven by spin-torque in a nanocontact / C.E. Zaspel, V.E. Kireev // Физика низких температур. — 2015. — Т. 41, № 10. — С. 1001–1008. — Бібліогр.: 30 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
nasplib_isofts_kiev_ua-123456789-128083 |
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| spelling |
Zaspel, C.E. Kireev, V.E. 2018-01-05T17:50:48Z 2018-01-05T17:50:48Z 2015 Vortex-antivortex dynamics driven by spin-torque in a nanocontact / C.E. Zaspel, V.E. Kireev // Физика низких температур. — 2015. — Т. 41, № 10. — С. 1001–1008. — Бібліогр.: 30 назв. — англ. 0132-6414 PACS: 75.10.Hk, 75.75.Jn, 73.90.+f https://nasplib.isofts.kiev.ua/handle/123456789/128083 A spin-polarized current in a nanocontact has been shown to induce the formation of a magnetic vortex at the nanocontact by the Oersted field, and spin-torque drives the vortex core in an elliptical orbit about the nanocontact. For the case of an external in-plane magnetic field in an extended free layer, the magnetization will be uniform far from the nanocontact, implying that vortex formation must be accompanied by the formation of an antivortex. Using the Thiele approach to describe the vortex-antivortex dynamics it is shown that the frequency of gyrotropic motion of the vortex is a function of the nanocontact current which is linear for large vortex-antivortex separations and it becomes nonlinear as the separation is decreased. The equilibrium vortexantivortex separation can be controlled by the nanocontact current as well as the external magnetic field. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Специальный выпуск К 80-летию уравнения Ландау–Лифшица Vortex-antivortex dynamics driven by spin-torque in a nanocontact Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Vortex-antivortex dynamics driven by spin-torque in a nanocontact |
| spellingShingle |
Vortex-antivortex dynamics driven by spin-torque in a nanocontact Zaspel, C.E. Kireev, V.E. Специальный выпуск К 80-летию уравнения Ландау–Лифшица |
| title_short |
Vortex-antivortex dynamics driven by spin-torque in a nanocontact |
| title_full |
Vortex-antivortex dynamics driven by spin-torque in a nanocontact |
| title_fullStr |
Vortex-antivortex dynamics driven by spin-torque in a nanocontact |
| title_full_unstemmed |
Vortex-antivortex dynamics driven by spin-torque in a nanocontact |
| title_sort |
vortex-antivortex dynamics driven by spin-torque in a nanocontact |
| author |
Zaspel, C.E. Kireev, V.E. |
| author_facet |
Zaspel, C.E. Kireev, V.E. |
| topic |
Специальный выпуск К 80-летию уравнения Ландау–Лифшица |
| topic_facet |
Специальный выпуск 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 |
A spin-polarized current in a nanocontact has been shown to induce the formation of a magnetic vortex
at the nanocontact by the Oersted field, and spin-torque drives the vortex core in an elliptical orbit about
the nanocontact. For the case of an external in-plane magnetic field in an extended free layer, the magnetization
will be uniform far from the nanocontact, implying that vortex formation must be accompanied by the formation
of an antivortex. Using the Thiele approach to describe the vortex-antivortex dynamics it is shown that the frequency
of gyrotropic motion of the vortex is a function of the nanocontact current which is linear for large vortex-antivortex
separations and it becomes nonlinear as the separation is decreased. The equilibrium vortexantivortex
separation can be controlled by the nanocontact current as well as the external magnetic field.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/128083 |
| citation_txt |
Vortex-antivortex dynamics driven by spin-torque in a nanocontact / C.E. Zaspel, V.E. Kireev // Физика низких температур. — 2015. — Т. 41, № 10. — С. 1001–1008. — Бібліогр.: 30 назв. — англ. |
| work_keys_str_mv |
AT zaspelce vortexantivortexdynamicsdrivenbyspintorqueinananocontact AT kireevve vortexantivortexdynamicsdrivenbyspintorqueinananocontact |
| first_indexed |
2025-12-07T21:00:27Z |
| last_indexed |
2025-12-07T21:00:27Z |
| _version_ |
1850884727393746944 |