Stabilization of the in-plane vortex state in two-dimensional circular nanorings
| العنوان: | Stabilization of the in-plane vortex state in two-dimensional circular nanorings |
|---|---|
| المؤلفون: | S. Mamica |
| المصدر: | Journal of Applied Physics. 113:093901 |
| بيانات النشر: | AIP Publishing, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Magnetic moment, Condensed matter physics, Chemistry, General Physics and Astronomy, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Square lattice, Vortex state, Square (algebra), Dipole, Delocalized electron, Spin wave, 0103 physical sciences, 010306 general physics, 0210 nano-technology, Excitation |
| الوصف: | We study two-dimensional circular nanorings composed of elementary magnetic moments arranged in sites of a square lattice. Using a microscopic approach that takes into account the dipolar and nearest-neighbor exchange interactions, we calculate the spin-wave frequencies and profiles to draw conclusions regarding the stability of the assumed magnetic configuration. We show that, in contrast to square rings, in circular rings the exchange-driven reorientation is sensitive to both the external and internal sizes of the ring. We associate this behavior with the delocalized character of the lowest spin-wave excitation, and show that, consequently, the in-plane vortex state can be stabilized even in the case of strong exchange interactions. |
| تدمد: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.4794004 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::fe6655814b1a3b5b47c02bb4a336ac36 https://doi.org/10.1063/1.4794004 |
| رقم الانضمام: | edsair.doi...........fe6655814b1a3b5b47c02bb4a336ac36 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10897550 00218979 |
|---|---|
| DOI: | 10.1063/1.4794004 |