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Dynamics of electron-magnon interaction and ultrafast demagnetization in thin iron films
Abstract
The electronic and spin dynamics in thin iron films have been investigated by means of time-resolved reflectivity and time-resolved magneto-optical Kerr effect. Combining the two techniques, it is possible to clarify the role of electron-phonon and electron-magnon interactions on the ultrafast magnetization dynamics. In particular, we show that the rapid $(\ensuremath{\sim}100\text{ }\text{fs})$ demagnetization is established at the electronic level through electron-magnon excitation, while the subsequent recovery of the spin order is attributed to the Elliott-Yafet spin-flip scattering process on a time scale slightly shorter than a picosecond. Both processes have characteristic time constants that undoubtedly differ from the measured electron-phonon coupling time of 240 fs.
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Cited by
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
Jiang, P., Qian, X., & Yang, R. (2018) · Journal of Applied Physics · doi:10.1063/1.5046944 · Cited by 424
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
Perspective: Ultrafast magnetism and THz spintronics
Walowski, J., & Münzenberg, M. (2016) · Journal of Applied Physics · doi:10.1063/1.4958846 · Cited by 386
Metadata
- Authors
- Carpene, E., Mancini, E., Dallera, C., Brenna, M., Puppin, E., & De Silvestri, S.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2008-11-20
- Volume
- 78
- Issue
- 17
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W2038878041
- Cited by
- 322
- References
- 0
- FWCI
- 5.41
- Type
- journal article
- Language
- en
- Open access
- closed
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- Carpene, E., Mancini, E., Dallera, C., Brenna, M., Puppin, E., & De Silvestri, S. (2008). Dynamics of electron-magnon interaction and ultrafast demagnetization in thin iron films. Physical Review B. https://doi.org/10.1103/physrevb.78.174422
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