Control of the Ultrafast Photoinduced Magnetization across the Morin Transition in
Open Access
- 3 March 2016
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 116 (9), 097401
- https://doi.org/10.1103/physrevlett.116.097401
Abstract
Excitation of the collinear compensated antiferromagnet with a single 60 fs laser pulse triggers a phase transition across the Morin point into a noncollinear spin state with a net magnetization. Time-resolved imaging of the magnetization dynamics of this process reveals that the pulse first excites the spin oscillations upon damping of which the noncollinear spin state emerges. The sign of the photoinduced magnetization is defined by the relative orientation of the pump polarization and the direction of the antiferromagnetic vector in the initial collinear spin state.
Keywords
Funding Information
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- Stichting voor Fundamenteel Onderzoek der Materie
- Seventh Framework Programme (NMP3-LA-2010-246102, 280555)
- European Research Council (FP7/2007-2013, 257280, 339813)
- Ministry of Education and Science of the Russian Federation (14.B25.31.0025)
- Russian Foundation for Basic Research (15-02-14222)
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