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Persistent nonequilibrium dynamics of the thermal energies in the spin and phonon systems of an antiferromagnet

  • We present a temperature and fluence dependent Ultrafast X-Ray Diffraction study of a laser-heated antiferromagnetic dysprosium thin film. The loss of antiferromagnetic order is evidenced by a pronounced lattice contraction. We devise a method to determine the energy flow between the phonon and spin system from calibrated Bragg peak positions in thermal equilibrium. Reestablishing the magnetic order is much slower than the cooling of the lattice, especially around the Néel temperature. Despite the pronounced magnetostriction, the transfer of energy from the spin system to the phonons in Dy is slow after the spin-order is lost.

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Author details:Alexander von ReppertORCiD, J. Puddell, A. Koc, M. Reinhardt, Wolfram LeitenbergerGND, K. Dumesnil, Flavio ZamponiGND, Matias BargheerORCiDGND
DOI:https://doi.org/10.1063/1.4961253
ISSN:2329-7778
Title of parent work (English):Structural dynamics
Publisher:AIP Publishing LLC
Place of publishing:Melville, NY
Publication type:Article
Language:English
Date of first publication:2016/09/07
Publication year:2016
Publishing institution:Universität Potsdam
Release date:2016/11/03
Volume:3
Funding institution:Universität Potsdam, Publikationsfonds
Funding number:PA 2016_37
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
DDC classification:5 Naturwissenschaften und Mathematik / 50 Naturwissenschaften / 500 Naturwissenschaften und Mathematik
5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Peer review:Referiert
Grantor:Publikationsfonds der Universität Potsdam
Publishing method:Open Access
License (German):License LogoCC-BY - Namensnennung 4.0 International
External remark:Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 272
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