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 Neel 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. (C) 2016 Author(s).
| Author details: | Alexander von ReppertORCiD, Jan-Etienne PudellORCiDGND, A. Koc, M. Reinhardt, Wolfram LeitenbergerGND, K. Dumesnil, Flavio Zamponi, Matias BargheerORCiDGND |
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| DOI: | https://doi.org/10.1063/1.4961253 |
| ISSN: | 2329-7778 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/27679803 |
| Title of parent work (English): | Structural dynamics |
| Publisher: | American Institute of Physics |
| Place of publishing: | Melville |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2016 |
| Publication year: | 2016 |
| Release date: | 2020/03/22 |
| Volume: | 3 |
| Number of pages: | 11 |
| Funding institution: | BMBF [05K12IP1] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
