@inproceedings{Bossini2016Contr-53334,
  year={2016},
  doi={10.1117/12.2225199},
  title={Controlling magnetism by ultrashort laser pulses: from fundamentals to nanoscale engineering},
  number={9835},
  isbn={978-1-5106-0076-8},
  issn={0277-786X},
  publisher={SPIE},
  address={Bellingham, Washington},
  series={Proceedings of SPIE},
  booktitle={Ultrafast Bandgap Photonics},
  editor={Rafailov, Michael K. and Mazur, Eric},
  author={Bossini, Davide and Rasing, Theo},
  note={Article Number: 98351P}
}

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    <dcterms:abstract xml:lang="eng">From the discovery of sub-picosecond demagnetization over a decade ago [1] to the recent demonstration of magnetization reversal by a single 40 femtosecond laser pulse [2], the manipulation of spins by ultra-short laser pulses has become a fundamentally challenging topic with a potentially high impact for future spintronics, data storage and manipulation and quantum computation [3]. It was realized that the femtosecond laser induced all-optical switching (AOS) as observed in ferrimagnets exploits the laser induced strongly non-equilibrium dynamics and the antiferromagnetic exchange interaction between their sublattices [4-6]. This opens the way to engineer new magnetic materials for AOS [7,8], though for real applications nanoscale control of inhomogeneities appears to be relevant [9]. Besides the intruiging technological implications of these observations, they broadened remarkably the frontiers of our fundamental knowledge of magnetic phenomena. The laser driven out-of-equilibrium states cannot be described in term of the well-established thermodynamical approach, which is based on the concepts of equilibrium and adiabatic transformations. Theoretical efforts, although in their infancy, have already demonstrated [5,6] that light-induced spin dynamics on the (sub)-picosecond time scale results in phenomena utterly forbidden in a thermodynamical framework. Another challenge is how to bring the optical manipulation of magnetic media to the required nanoscale. This is clearly a key element for the perspectives in terms of magnetic recording. In addition, it would allow to explore a novel regime of spin dynamics, since the investigation of magnets on the femtosecond time-scale and the nanometer length-scale simultaneously is unexplored. One experimental approach which may be successful makes use of wave-shaping techniques [10]. Recent results with engineered hybrid magnetic materials and nanofocusing via a plasmonic antenna showed the practical potential of AOS: the magnetization of domains as small as 50 nm was repeatedly reversed by a single laser pulse [11]. The process was fully deterministic, implying that each laser pulse totally reversed the magnetization of the domain in a reproducible way. Employing antennas provided another significant benefit, by decreasing the threshold laser energy required for the AOS to occur.</dcterms:abstract>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-04-01T11:20:16Z</dc:date>
    <dc:creator>Bossini, Davide</dc:creator>
    <dc:creator>Rasing, Theo</dc:creator>
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    <dc:contributor>Rasing, Theo</dc:contributor>
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    <dcterms:issued>2016</dcterms:issued>
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    <dc:contributor>Bossini, Davide</dc:contributor>
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