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Ultrafast Transport of Laser-Excited Spin-Polarized Carriers inAu/Fe/MgO(001)
Open accessAbstract
Hot carrier-induced spin dynamics is analyzed in epitaxial Au/Fe/MgO(001) by a time domain approach. We excite a spin current pulse in Fe by 35 fs laser pulses. The transient spin polarization, which is probed at the Au surface by optical second harmonic generation, changes its sign after a few hundred femtoseconds. This is explained by a competition of ballistic and diffusive propagation considering energy-dependent hot carrier relaxation rates. In addition, we observe the decay of the spin polarization within 1 ps, which is associated with the hot carrier spin relaxation time in Au.
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Cited by
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Terahertz spin current pulses controlled by magnetic heterostructures
Kampfrath, T., Battiato, M., Maldonado, P., Eilers, G., Nötzold, J., Mährlein, S., Zbarsky, V., Freimuth, F., Mokrousov, Y., Blügel, S., et al. (2013) · Nature Nanotechnology · doi:10.1038/nnano.2013.43 · Cited by 714
Ultrafast magnetization enhancement in metallic multilayers driven by superdiffusive spin current
Rudolf, D., La-O-Vorakiat, C., Battiato, M., Adam, R., Shaw, J. M., Turgut, E., Maldonado, P., Mathias, S., Grychtol, P., Nembach, H. T., et al. (2012) · Nature Communications · doi:10.1038/ncomms2029 · Cited by 401
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Femtosecond control of electric currents in metallic ferromagnetic heterostructures
Huisman, T. J., Mikhaylovskiy, R. V., Costa, J. D., Freimuth, F., Paz, E., Ventura, J., Freitas, P. P., Blügel, S., Mokrousov, Y., Rasing, T., et al. (2016) · Nature Nanotechnology · doi:10.1038/nnano.2015.331 · Cited by 267
Metadata
- Authors
- Melnikov, A., Razdolski, I., Wehling, T. O., Papaioannou, E. T., Roddatis, V., Fumagalli, P., Aktsipetrov, O., Lichtenstein, A. I., & Bovensiepen, U.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2011-08-12
- Volume
- 107
- Issue
- 7
- Pages
- 076601-076601
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2055630667
- Cited by
- 276
- References
- 0
- FWCI
- 7.30
- Type
- journal article
- Language
- en
- Open access
- green
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- The paper
- Melnikov, A., Razdolski, I., Wehling, T. O., Papaioannou, E. T., Roddatis, V., Fumagalli, P., Aktsipetrov, O., Lichtenstein, A. I., & Bovensiepen, U. (2011). Ultrafast Transport of Laser-Excited Spin-Polarized Carriers inAu/Fe/MgO(001). Physical Review Letters. https://doi.org/10.1103/physrevlett.107.076601
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