PMID: 22587282May 17, 2012Paper

Coherent control of the route of an ultrafast magnetic phase transition via low-amplitude spin precession

Physical Review Letters
J A de JongA V Kimel

Abstract

Time-resolved magneto-optical imaging of laser-excited rare-earth orthoferrite (SmPr)FeO3 demonstrates that a single 60 fs circularly polarized laser pulse is capable of creating a magnetic domain on a picosecond time scale with a magnetization direction determined by the helicity of light. Depending on the light intensity and sample temperature, pulses of the same helicity can create domains with opposite magnetizations. We argue that this phenomenon relies on a twofold effect of light which (i) instantaneously excites coherent low-amplitude spin precession and (ii) triggers a spin reorientation phase transition. The former dynamically breaks the equivalence between two otherwise degenerate states with opposite magnetizations in the high-temperature phase and thus controls the route of the phase transition.

References

Apr 27, 2002·Nature·V J Anderson, H N W Lekkerkerker
Nov 2, 2007·Nature Materials·Matthias Wuttig, Noboru Yamada
Oct 2, 2009·Physical Review Letters·K VahaplarTh Rasing
Mar 10, 2012·Physical Review Letters·S L JohnsonA T Boothroyd

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Citations

May 3, 2014·Optics Express·Alexander HassdenteufelRudolf Bratschitsch
Mar 23, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·J A de JongTh Rasing
Sep 17, 2015·Nature Communications·R V MikhaylovskiyA V Kimel
Apr 26, 2013·Advanced Materials·Alexander HassdenteufelRudolf Bratschitsch
Sep 15, 2015·Optics Express·D AfanasievA V Kimel
Jan 18, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jiajia GuoGuohong Ma
Feb 20, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Junjie JiangZhenxiang Cheng
Nov 8, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Qiuping FuJianzhong Chen
Apr 8, 2017·Scientific Reports·Kirill A GrishuninMikhail B Agranat
May 6, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·D AfanasievA V Kimel
Jul 16, 2013·Physical Review Letters·Oleksandr KovalenkoVasily V Temnov
May 1, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Xiong LuoShixun Cao

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