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Journal Article

Spatially resolved ultrafast magnetic dynamics initiated at a complex oxide heterointerface

MPS-Authors
/persons/resource/persons133775

Först,  Michael
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science, 22761 Hamburg, Germany;

/persons/resource/persons133845

Mankowsky,  Roman
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science, 22761 Hamburg, Germany;

/persons/resource/persons133779

Khanna,  Vikaran
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Diamond Light Source, Didcot OX11 0DE, UK;
Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, UK;

/persons/resource/persons133777

Bromberger,  Hubertus
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science, 22761 Hamburg, Germany;

/persons/resource/persons133811

Cavalleri,  Andrea
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free Electron Laser Science, 22761 Hamburg, Germany;
Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, UK;

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Foerst_Supplement.pdf
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Citation

Först, M., Caviglia, A. D., Scherwitzl, R., Mankowsky, R., Zubko, P., Khanna, V., et al. (2015). Spatially resolved ultrafast magnetic dynamics initiated at a complex oxide heterointerface. Nature Materials, 14(9), 883-888. doi:10.1038/nmat4341.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0028-1341-1
Abstract
Static strain in complex oxide heterostructures has been extensively used to engineer electronic and magnetic properties at equilibrium. In the same spirit, deformations of the crystal lattice with light may be used to achieve functional control across heterointerfaces dynamically. Here, by exciting large-amplitude infrared-active vibrations in a LaAlO3 substrate we induce magnetic order melting in a NdNiO3 film across a heterointerface. Femtosecond resonant soft X-ray diffraction is used to determine the spatiotemporal evolution of the magnetic disordering. We observe a magnetic melt front that propagates from the substrate interface into the film, at a speed that suggests electronically driven motion. Light control and ultrafast phase front propagation at heterointerfaces may lead to new opportunities in optomagnetism, for example by driving domain wall motion to transport information across suitably designed devices.