Publikationsdatum:
2018-08-14
Beschreibung:
Author(s): A. P. Danilov, A. V. Scherbakov, B. A. Glavin, T. L. Linnik, A. M. Kalashnikova, L. A. Shelukhin, D. P. Pattnaik, A. W. Rushforth, C. J. Love, S. A. Cavill, D. R. Yakovlev, and M. Bayer An alternative method for spin pumping – injection of a pure spin current into a nonmagnetic material by the precessing magnetization in an adjacent ferromagnet – is demonstrated without the need to use microwaves. Femtosecond laser pulses trigger the magnetization precession in adjacent (Fe,Ga) layers separated by a 5-nm Cu spacer. The spin currents emerging from the two layers couple their magnetization, leading to superposition of the two collective modes, observed in time-resolved Kerr rotation measurements. For resonant precession frequencies in the (Fe,Ga) layers, the authors achieve strongly split decay rates of the collective modes, indicating a purely dissipative coupling. [Phys. Rev. B 98, 060406(R)] Published Mon Aug 13, 2018
Schlagwort(e):
Magnetism
Print ISSN:
1098-0121
Digitale ISSN:
1095-3795
Thema:
Physik
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