Ultrafast Path for Optical Magnetization Reversal via a Strongly Nonequilibrium State

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2009
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Vahaplar, K.
Kalashnikova, A. M.
Kimel, A. V.
Chantrell, Roy W.
Tsukamoto, A.
Itoh, A.
Kirilyuk, A.
Rasing, Theo
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Physical Review Letters. 2009, 103, 117201. Available under: doi: 10.1103/PhysRevLett.103.117201
Zusammenfassung

Using time-resolved single-shot pump-probe microscopy we unveil the mechanism and the time scale of all-optical magnetization reversal by a single circularly polarized 100 fs laser pulse. We demonstrate that the reversal has a linear character, i.e., does not involve precession but occurs via a strongly nonequilibrium state. Calculations show that the reversal time which can be achieved via this mechanism is within 10 ps for a 30 nm domain. Using two single subpicosecond laser pulses we demonstrate that for a 5 µm domain the magnetic information can be recorded and readout within 30 ps, which is the fastest write-read event demonstrated for magnetic recording so far.

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530 Physik
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Spin dynamics Ultrafast path for opitcal magnetization
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ISO 690VAHAPLAR, K., A. M. KALASHNIKOVA, A. V. KIMEL, Denise HINZKE, Ulrich NOWAK, Roy W. CHANTRELL, A. TSUKAMOTO, A. ITOH, A. KIRILYUK, Theo RASING, 2009. Ultrafast Path for Optical Magnetization Reversal via a Strongly Nonequilibrium State. In: Physical Review Letters. 2009, 103, 117201. Available under: doi: 10.1103/PhysRevLett.103.117201
BibTex
@article{Vahaplar2009Ultra-9078,
  year={2009},
  doi={10.1103/PhysRevLett.103.117201},
  title={Ultrafast Path for Optical Magnetization Reversal via a Strongly Nonequilibrium State},
  volume={103},
  journal={Physical Review Letters},
  author={Vahaplar, K. and Kalashnikova, A. M. and Kimel, A. V. and Hinzke, Denise and Nowak, Ulrich and Chantrell, Roy W. and Tsukamoto, A. and Itoh, A. and Kirilyuk, A. and Rasing, Theo},
  note={Article Number: 117201}
}
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