Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-11-13
NANO Letters 8 (2008) 3683 - 3687
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
21 pages (main text - 13 pages + Supporting Information)
Scientific paper
10.1021/nl801820h
Low-cost spintronic devices functioning in zero applied magnetic field are required for bringing the idea of spin-based electronics into the real-world industrial applications. Here we present first microwave measurements performed on nanomagnet devices fabricated by electrodeposition inside porous membranes. In the paper, we discuss in details a microwave resonator consisting of three nanomagnets, which functions in zero external magnetic field. By applying a microwave signal at a particular frequency, the magnetization of the middle nanomagnet experiences the ferromagnetic resonance (FMR), and the device outputs a measurable direct current (spin-torque diode effect). Alternatively, the nanodevice can be used as a microwave oscillator functioning in zero field. In order to test the resonators at microwave frequencies, we developed a simple measurement set-up.
Ansermet J.-Ph.
Ducati C.
Mourachkine Andrei
Yazyev Oleg V.
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