期刊
PHYSICAL REVIEW APPLIED
卷 1, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.1.044006
关键词
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资金
- Center for NanoFerroic Devices (CNFD)
- Nanoelectronics Research Initiative (NRI)
- U.S. National Science Foundation [ECCS-1305586, DMR-1015175, DMR-1210850, ECCS-1309416]
- MTO/MESO from DARPA [N66001-11-1-4114]
- U.S. Army TARDEC
- U.S. Army RDECOM
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1305574] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1309416] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1210850] Funding Source: National Science Foundation
A theory of parametric excitation of spin waves (SWs) in ultrathin ferromagnetic strips by a microwave electric field is developed. The excitation uses the effect of voltage-controlled magnetic anisotropy in ferromagnet-dielectric heterostuctures. The characteristic values of the electric field necessary for parametric excitation of propagating SWs of 5-10 GHz frequency in Fe/MgO structure are found to be 0.1-1.5 V/nm. The minimum excitation threshold is achieved in narrow strip (strip width w(x) similar to 10-20 nm) for relatively long dipole-dominated SWs. In wider strips (w(x) greater than or similar to 100 nm) electric parametric pumping excites mostly short exchange-dominated SWs having higher excitation thresholds, but substantially wider range of possible SW frequencies.
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