期刊
APPLIED PHYSICS LETTERS
卷 94, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3097238
关键词
cobalt alloys; copper; iron alloys; nanocontacts; nanoelectronics; nickel alloys; oscillators; spin valves; spin waves
资金
- Swedish Foundation for strategic Research (SSF)
- Swedish Research Council (VR)
- Goran Gustafsson Foundation
- Knut and Alice Wallenberg Foundation
We study the impact of the magnetic field angle on the oscillation frequency of a nanocontact spin torque oscillator (STO) in magnetic fields up to 2.1 T. A model based on a single nonlinear, nonpropagating spin wave mode is found to explain the experimental data. We observe oscillation frequencies as high as 46 GHz in high magnetic fields applied normal to the film plane, and we are able to extrapolate the maximum expected operating frequency to beyond 65 GHz for in-plane magnetic fields. The STO signal remains surprisingly strong at these conditions, which opens up for possible millimeter-wave applications.
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