Spin-wave instability for parallel pumping in ferromagnetic thin films under oblique field

Details Spin-wave instability for parallel pumping in ferromagnetic thin films under oblique field Spin-wave instability for parallel pumping in ferromagnetic thin films under oblique field

2006-04-13

arxiv.org/abs/cond-mat/0604329v1

Physics

Condensed Matter

Other Condensed Matter

14 pages, 3 figures

Scientific paper

Spin-wave instability for parallel pumping is studied theoretically. The spin-wave instability threshold is calculated in ferromagnetic thin films under oblique field which has an oblique angle to the film plane. The butterfly curve of the threshold usually has a cusp at a certain value of the static external field. While the static field value of the cusp point varies as the oblique angle changes, the general properties of the butterfly curve show little noteworthy change. For very thin films, however, multiple cusps of the butterfly curve can appear due to different standing spin-wave modes, which indicate a novel feature for thin films under oblique field.

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