Onset-Time Control Of THz Transients Generated By Spintronic Emitters

Paper (OPTO6)

Fri, 13 Nov 2020 12:15am to 12:30am

Room: Tesla

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We have generated intense electromagnetic transients by the femtosecond laser pulse illumination of ferromagnet/metal (Ni80Fe20/Pt and CoPd/Pd) nanobilayers, in the presence of an external magnetic field. Fourier analysis revealed that the frequency content of these transients extended up to ~5 THz. We have also observed that upon the increase of the magnetic field, the entire THz transient shifts towards earlier times of up to 110 fs. We ascribe this magnetically tunable onset-time shift to a joint action of the field-dependent spin-spin scattering and the Lorenz force acting on the optically triggered superdiffusive spin currents in the

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Presenters and Authors Info

Presenter: Anonymous

Authors: Chen, Genyu; Adam, Roman; Bürgler, Daniel E.; Pericolo, Anthony; Cheng, Jing; Komissarov, Ivan; Heidtfeld, Sarah; Hardtdegen, Hilde; Mikulics, Martin; Schneider, Claus M.; Sobolewski, Roman

Ernst Ruska Zentrum (ERC 2), Ernst Ruska-Centre (ER-C-2), Peter Grünberg Institute (PGI-6), University of Rochester