J. Phys. IV France 07 (1997) C1-455-C1-456
Parametric Amplification of Propagating Spin Waves in Ferrite FilmsB.A. Kalinikos1, N.G. Kovshikov1, M.P. Kostylev1 and H. Benner2
1 St. Petersburg Electrotechnical University, 197376, St. Petersburg, Russia
2 Institut für Festkörperphysik, Technische Hochschule Darmstadt, 64289, Darmstadt, Germany
Amplification of a weak signal spin wave by a strong pump spin wave propagating in yttrium iron garnet film was observed for the first time. A theoretical explanation of this effect is given on the basis of the four-wave parametric processes.
© EDP Sciences 1997