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Spin Torque Diode Spectroscopy of Quantized Spin Wave Excited in a Magnetic Tunnel Junction

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4 Author(s)
Yamaguchi, A. ; Spintronics Res. Center, Nat. Inst. of Adv. Ind. Sci. & Technol. (AIST), Tsukuba, Japan ; Fukushima, A. ; Kubota, H. ; Yuasa, S.

We systematically measured the spin torque diode spectra of a magnetic tunnel junction nanoelement as a function of external magnetic field and field angle using a homemade quasi-omnidirectional broadband electrical spectrometer. The electrical spectroscopies reveal a significant higher-order spin wave modes excited in the free layer, which is substantiated by an analytical model.

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Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 11 )