Orbital-resolved spin model for thermal magnetization switching in rare-earth-based ferrimagnets

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2013
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FEMTOSPIN - Multiscale Modelling of Femtosecond Spin Dynamics
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Physical Review B. 2013, 88(2). ISSN 1098-0121. eISSN 1095-3795. Available under: doi: 10.1103/PhysRevB.88.020406
Zusammenfassung

The switching of rare-earth-based ferrimagnets triggered by thermal excitation is investigated on the basis of an atomistic spin model beyond the distinguishing magnetic moments due to electrons in d and f orbitals of the rare earth. It is shown that after excitation of the conduction electrons a transient ferromagneticlike state follows from a dissipationless spin dynamics where energy and angular momentum are distributed between the two sublattices. The final relaxation can then lead to a new state with the magnetization switched with respect to the initial state. The time scale of the switching event is to a large extent determined by the exchange interaction between the two sublattices.

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530 Physik
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switching of rare-earth-based ferrimagnets, atomistic spin model, rigid-spin approximation, spin dynamics, sublattices
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ISO 690WIENHOLDT, Sönke, Denise HINZKE, Karel CARVA, Peter OPPENEER, Ulrich NOWAK, 2013. Orbital-resolved spin model for thermal magnetization switching in rare-earth-based ferrimagnets. In: Physical Review B. 2013, 88(2). ISSN 1098-0121. eISSN 1095-3795. Available under: doi: 10.1103/PhysRevB.88.020406
BibTex
@article{Wienholdt2013Orbit-24328,
  year={2013},
  doi={10.1103/PhysRevB.88.020406},
  title={Orbital-resolved spin model for thermal magnetization switching in rare-earth-based ferrimagnets},
  number={2},
  volume={88},
  issn={1098-0121},
  journal={Physical Review B},
  author={Wienholdt, Sönke and Hinzke, Denise and Carva, Karel and Oppeneer, Peter and Nowak, Ulrich}
}
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