Journal ArticleDOI
Explaining the paradoxical diversity of ultrafast laser-induced demagnetization
B Bert Koopmans,Gregory Malinowski,F. Dalla Longa,D. Steiauf,M. Fähnle,T. Roth,Mirko Cinchetti,Martin Aeschlimann +7 more
TLDR
It is shown that a model based on electron-phonon-mediated spin-flip scattering explains both timescales on equal footing and concludes that the ultrafast magnetization dynamics can be well described disregarding highly excited electronic states, merely considering the thermalized electron system.Abstract:
Demagnetization in metals occurs on very different timescales depending on the material. It is now shown that electron–phonon-mediated spin scattering describes the process of demagnetization well in every case, and the differences in timescale are mainly determined by the ratio between Curie temperature and the atomic magnetic moment.read more
Citations
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Journal ArticleDOI
Ultrafast optical manipulation of magnetic order
TL;DR: In this article, the authors review the progress in this field of laser manipulation of magnetic order in a systematic way and show that the polarization of light plays an essential role in the manipulation of the magnetic moments at the femtosecond time scale.
Journal ArticleDOI
Transient ferromagnetic-like state mediating ultrafast reversal of antiferromagnetically coupled spins
Ilie Radu,K. Vahaplar,Christian Stamm,Torsten Kachel,Niko Pontius,Hermann A. Dürr,Hermann A. Dürr,Thomas Ostler,Joseph Barker,Richard F. L. Evans,Roy W. Chantrell,Arata Tsukamoto,Arata Tsukamoto,Akiyoshi Itoh,Andrei Kirilyuk,Theo Rasing,Alexey Kimel +16 more
TL;DR: It is found that the ultrafast spin reversal in GdFeCo, where spins are coupled antiferromagnetically, occurs by way of a transient ferromagnetic-like state, which provides a concept for the possibility of manipulating magnetic order on the timescale of the exchange interaction.
Journal ArticleDOI
Interface-induced phenomena in magnetism
Frances Hellman,Axel Hoffmann,Yaroslav Tserkovnyak,Geoffrey S. D. Beach,Eric E. Fullerton,Chris Leighton,Allan H. MacDonald,Daniel C. Ralph,Dario Arena,Hermann A. Dürr,Peter Fischer,Julie Grollier,Joseph P. Heremans,Tomas Jungwirth,Tomas Jungwirth,Alexey Kimel,B Bert Koopmans,Ilya Krivorotov,Steven J. May,Amanda K. Petford-Long,James M. Rondinelli,Nitin Samarth,Ivan K. Schuller,Ivan K. Schuller,Andrei Slavin,Mark D. Stiles,Oleg Tchernyshyov,André Thiaville,Barry L. Zink +28 more
TL;DR: This article reviews static and dynamic interfacial effects in magnetism, focusing on interfacially-driven magnetic effects and phenomena associated with spin-orbit coupling and intrinsic symmetry breaking at interfaces, identifying the most exciting new scientific results and pointing to promising future research directions.
Journal ArticleDOI
The building blocks of magnonics
TL;DR: In this paper, a review of the functionalities of spinwave devices, concepts for spin-wave based computing and magnonic crystals is presented. But the focus of this review is on the control over the interplay between localization and delocalization of the spinwave modes using femtosecond lasers.
Journal ArticleDOI
The building blocks of magnonics
TL;DR: In this paper, a review of spin-wave properties and properties is presented, where the crucial parameters to realize free Bloch states and how, by contrast, a controlled localization might allow us to gradually turn on and manipulate spinwave interactions in spinwave based devices in the future.
References
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Accurate and simple analytic representation of the electron-gas correlation energy
John P. Perdew,Yue Wang +1 more
TL;DR: A simple analytic representation of the correlation energy for a uniform electron gas, as a function of density parameter and relative spin polarization \ensuremath{\zeta}, which confirms the practical accuracy of the VWN and PZ representations and eliminates some minor problems.
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Accurate and simple density functional for the electronic exchange energy: Generalized gradient approximation
John P. Perdew,Wang Yue +1 more
TL;DR: Improvements over other simple functionals are also found in the exchange contributions to the valence-shell removal energy of an atom and to the surface energy of jellium within the infinite barrier model.
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Explicit, First-Principles Tight-Binding Theory
Ole Krogh Andersen,Ove Jepsen +1 more
TL;DR: In this paper, the minimal base of muffin-tin orbitals is transformed exactly into a tight-binding base and the linear transformations, the orbitals, and the Hamiltonian overlap are expressed in terms of one matrix, the canonical structure matrix.
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Ultrafast spin dynamics in ferromagnetic nickel.
TL;DR: The relaxation processes of electrons and spins systems following the absorption of femtosecondoptical pulses in ferromagnetic nickel have been studied using optical and magneto-optical pump-probetechniques and the experimental results are adequately described by a model including three interacting reservoirs.
Journal ArticleDOI
Theory of the Effect of Spin-Orbit Coupling on Magnetic Resonance in Some Semiconductors
TL;DR: In this paper, the effect of spin-orbit coupling on the usual band theory of electrons in a lattice is considered, and particular attention is given to the bands in impurity semiconductors with diamond-type structure.