Spin-photo-currents generated by femtosecond laser pulses in a ferrimagnetic GdFeCo/Pt bilayer

Spin-photo-currents generated by femtosecond laser pulses in a ferrimagnetic GdFeCo/Pt bilayer

Using THz emission spectroscopy, we detect spin-photo-currents from a ferrimagnetic amorphous alloy GdFeCo to an adjacent Pt capping layer. The currents are generated upon excitation of a GdFeCo/Pt heterostructure with femtosecond laser pulses. It is found that the polarization of the spin-polarized...

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Veröffentlicht in:Applied physics letters 2017-02, Vol.110 (7)
Hauptverfasser: Huisman, T. J., Ciccarelli, C., Tsukamoto, A., Mikhaylovskiy, R. V., Rasing, Th, Kimel, A. V.
Format: Artikel
Sprache:eng
Schlagworte:
Amorphous alloys
Applied physics
Femtosecond pulses
Ferrimagnetism
Heterostructures
Lattices (mathematics)
Magnetization
Metallic glasses
Polarization (spin alignment)
Subgroups
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Zusammenfassung:Using THz emission spectroscopy, we detect spin-photo-currents from a ferrimagnetic amorphous alloy GdFeCo to an adjacent Pt capping layer. The currents are generated upon excitation of a GdFeCo/Pt heterostructure with femtosecond laser pulses. It is found that the polarization of the spin-polarized current is determined by magnetic sublattice sensitivity rather than the total magnetization, allowing for spin-polarized current generation when the net magnetization is zero.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4976202