التفاصيل البيبلوغرافية
| العنوان: |
Spin-torque driven ferromagnetic resonance in a nonlinear regime |
| المؤلفون: |
G. de Loubens, W. Chen, Andrew D. Kent, J.-M. L. Beaujour, Jonathan Z. Sun |
| بيانات النشر: |
arXiv, 2009. |
| سنة النشر: |
2009 |
| مصطلحات موضوعية: |
Physics, Physics and Astronomy (miscellaneous), Condensed matter physics, Condensed Matter - Mesoscale and Nanoscale Physics, Resonance, FOS: Physical sciences, Ferromagnetic resonance, Magnetization, Magnetic anisotropy, Condensed Matter::Materials Science, Amplitude, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), Precession, Excitation, Harmonic oscillator |
| الوصف: |
Spin-valve based nanojunctions incorporating Co|Ni multilayers with perpendicular anisotropy were used to study spin-torque driven ferromagnetic resonance (ST-FMR) in a nonlinear regime. Perpendicular field swept resonance lines were measured under a large amplitude microwave current excitation, which produces a large angle precession of the Co|Ni layer magnetization. With increasing rf power the resonance lines broaden and become asymmetric, with their peak shifting to lower applied field. A nonhysteretic step jump in ST-FMR voltage signal was also observed at high powers. The results are analyzed in in terms of the foldover effect of a forced nonlinear oscillator and compared to macrospin simulations. The ST-FMR nonhysteretic step response may have applications in frequency and amplitude tunable nanoscale field sensors.
Comment: 4 pages, 3 figures, to appear in Applied Physics Letters |
| DOI: |
10.48550/arxiv.0910.4678 |
| URL الوصول: |
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a14db9c7a1588d17b7e6575630d7cf0f |
| Rights: |
OPEN |
| رقم الانضمام: |
edsair.doi.dedup.....a14db9c7a1588d17b7e6575630d7cf0f |
| قاعدة البيانات: |
OpenAIRE |