Ferromagnetic resonance driven by an ac current: a brief review
Excitation of ferromagnetic resonance (FMR) by an ac current has been observed in macroscopic ferromagnetic films for decades and typically relies on the ac Oersted field of the current to drive magnetic moments into precession and classical rectification of ac signals to detect the resonance. Rec...
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| Date: | 2013 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2013
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| Series: | Физика низких температур |
| Subjects: | |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/118222 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Ferromagnetic resonance driven by an ac current: a brief review / C. Wang, H. Seinige, M. Tsoi // Физика низких температур. — 2013. — Т. 39, № 3. — С. 320–325. — Бібліогр.: 30 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | Excitation of ferromagnetic resonance (FMR) by an ac current has been observed in macroscopic ferromagnetic
films for decades and typically relies on the ac Oersted field of the current to drive magnetic moments into
precession and classical rectification of ac signals to detect the resonance. Recently, current-driven ferromagnetic
resonances have attracted renewed attention with the discovery of the spin-transfer torque (STT) effect due to
its potential applications in magnetic memory and microwave technologies. Here STT associated with the ac current
is used to drive magnetodynamics on the nanoscale that enables FMR studies in sample volumes smaller by
a factor of 1000 compared to conventional resonance techniques. In this paper, we briefly review the basics of
STT–FMR technique and the results of various STT–FMR experiments. |
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