R. Ghez, M.B. Small
JES
Collective spin dynamics of two dipole-coupled nanomagnets in spin-flop tunnel junctions are studied experimentally and theoretically. The measured GHz magnetization oscillations reveal several collective spin-precessional modes. Analytical macrospin and numerical micromagnetic models of the spin-flop dynamics are developed, which provide a detailed explanation of the observed frequency spectra in terms of optical, acoustical, and micromagnetic modes in the antiparallel, parallel, and scissor magnetization states of the junctions. © 2009 The American Physical Society.
R. Ghez, M.B. Small
JES
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Advanced Materials
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Proceedings of SPIE - The International Society for Optical Engineering