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  Coherent terahertz control of antiferromagnetic spin waves

Kampfrath, T., Sell, A., Klatt, G., Pashkin, A., Mährlein, S., Dekorsy, T., et al. (2011). Coherent terahertz control of antiferromagnetic spin waves. Nature Photonics, 5(1), 31-34. doi:10.1038/NPHOTON.2010.259.

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Kampfrath, Tobias1, 2, 3, Autor           
Sell, Alexander2, Autor
Klatt, Gregor2, Autor
Pashkin, Alexej2, Autor
Mährlein, Sebastian2, Autor
Dekorsy, Thomas2, Autor
Wolf, Martin1, Autor           
Fiebig, Manfred4, Autor
Leitenstorfer , Alfred2, Autor
Huber, Rupert2, Autor
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Department of Physics and Center for Applied Photonics, University of Konstanz, Universitätsstraße 10, 78464 Konstanz, Germany, ou_persistent22              
3FOM Institute for Atomic and Molecular Physics (AMOLF), Science Park 104, 1098 XG Amsterdam, The Netherlands, ou_persistent22              
4Helmholtz-Institut für Strahlen- und Kernphysik, Nußallee 14-16, 53115 Bonn, Germany, ou_persistent22              

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 Zusammenfassung: Ultrafast charge and spin excitations in the elusive terahertz regime1, 2 of the electromagnetic spectrum play a pivotal role in condensed matter3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13. The electric field of free-space terahertz pulses has provided a direct gateway to manipulating the motion of charges on the femtosecond timescale6, 7, 8, 9. Here, we complement this process by showing that the magnetic component of intense terahertz transients enables ultrafast control of the spin degree of freedom. Single-cycle terahertz pulses switch on and off coherent spin waves in antiferromagnetic NiO at frequencies as high as 1 THz. An optical probe pulse with a duration of 8 fs follows the terahertz-induced magnetic dynamics directly in the time domain and verifies that the terahertz field addresses spins selectively by means of the Zeeman interaction. This concept provides a universal ultrafast means to control previously inaccessible magnetic excitations in the electronic ground state.

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Sprache(n): eng - English
 Datum: 2010-10-042010-11-212011-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1038/NPHOTON.2010.259
 Art des Abschluß: -

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Titel: Nature Photonics
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 5 (1) Artikelnummer: - Start- / Endseite: 31 - 34 Identifikator: ISSN: 1749-4885
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000240270