Abstract
Synchrotron-based magnetic imaging techniques have proven to be powerful for the investigation of geometrically confined magnetic domain walls and their dynamics due to the interaction with fields and spin-polarized currents. The application of different high resolution imaging techniques allows one to determine the nanoscale domain wall spin structures, which are comprehensively reviewed. Different domain wall types are observed depending on the materials and the geometries resulting from the interplay of the micromagnetic energy terms. When currents are injected into the nanostructures, the interaction between the spin-polarized charge carriers and the magnetization leads to current-induced domain wall motion due to the spin transfer torque effect, which is studied by direct imaging. Domain wall motion can be induced by field pulses, and imaging with sub-nanosecond time resolution of the domain wall dynamics is presented.
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Acknowledgements
Support by the Deutsche Forschungsgemeinschaft through SFB 513, SFB 767, project KL1811, the Landesstiftung Baden-Württemberg, the EPSRC (U. K.), the Samsung Advanced Institute of Technology, and the EU through the European Regional Development Fund (Interreg III A Program), the Marie Curie Research Training Network SPINSWITCH (MRTN-CT-2006-035327) as well as the European Research Council (Starting Independent Researcher Grant ERC-2007-StG 208162) is greatly acknowledged. A large number of PhD students, postdocs, and colleagues have contributed to the various aspects of this work and all the support, help, and encouragement is gratefully acknowledged. Continuous support by the late J. A. C. Bland and U. Rüdiger was crucial to the success of the work at many stages.
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Kläui, M. (2010). Domain Wall Spin Structures and Dynamics Probed by Synchrotron Techniques. In: Beaurepaire, E., Bulou, H., Scheurer, F., Jean-Paul, K. (eds) Magnetism and Synchrotron Radiation. Springer Proceedings in Physics, vol 133. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-04498-4_13
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DOI: https://doi.org/10.1007/978-3-642-04498-4_13
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