Ultrafast and Energy-Efficient Quenching of Spin Order: Antiferromagnetism Beats Ferromagnetism
- By comparing femtosecond laser pulse induced ferro- and antiferromagnetic dynamics in one and the same material-metallic dysprosium-we show both to behave fundamentally different. Antiferromagnetic order is considerably faster and much more efficiently reduced by optical excitation than its ferromagnetic counterpart. We assign the fast and extremely efficient process in the antiferromagnet to an interatomic transfer of angular momentum within the spin system. Our findings imply that this angular momentum transfer channel is effective in other magnetic metals with nonparallel spin alignment. They also point out a possible route towards energy-efficient spin manipulation for magnetic devices.
| Author details: | Nele Thielemann-Kühn, Daniel Schick, Niko Pontius, Christoph Trabant, Rolf MitznerORCiDGND, Karsten Holldack, Hartmut ZabelGND, Alexander FöhlischORCiDGND, Christian Schuessler-LangeheineORCiD |
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| DOI: | https://doi.org/10.1103/PhysRevLett.119.197202 |
| ISSN: | 0031-9007 |
| ISSN: | 1079-7114 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/29219516 |
| Title of parent work (English): | Physical review letters |
| Publisher: | American Physical Society |
| Place of publishing: | College Park |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2017 |
| Publication year: | 2017 |
| Release date: | 2020/04/20 |
| Volume: | 119 |
| Number of pages: | 6 |
| Funding institution: | BMBF [05K10PK2]; Helmholtz Association [PD-142]; Helmholtz Association via the Helmholtz Virtual Institute |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
