Format:
Online-Ressource (XXI, 117 p. 46 illus. in color, online resource)
Edition:
Springer eBook Collection. Physics and Astronomy
ISBN:
9783319982526
Series Statement:
Springer Theses, Recognizing Outstanding Ph.D. Research
Content:
This book focuses on the characterisation of the chiral and topological nature of magnetic skyrmions in noncentrosymmetric helimagnets. In these materials, the skyrmion lattice phase appears as a long-range-ordered, close-packed grid of nearly millimetre-level correlation length, while the size of a single skyrmion is 3-100 nm. This is a very challenging range of length scales (spanning 5 orders of magnitude from tens of nm to mm) for magnetic characterisation techniques, and, to date, extensive information on this fascinating, magnetically ordered state has remained elusive. In response, this work develops novel resonant elastic x-ray scattering (REXS) techniques, which allow the magnetic structure, including the long-range order and domain formation, as well as microscopic skyrmion parameters, to be measured across the full range of length scales. Most importantly, using circular dichroism in REXS, the internal structure of a given skyrmion, the topological winding number, and the skyrmion helicity angle can all be unambiguously determined. These new techniques are applicable to many materials systems, and allow us to retrieve information on modulated spin structures, multiferroic order, spin-density-waves, and other forms of topological magnetic order
Content:
The Story so Far -- Measurement of the Magnetic Long-range Order -- Measurement of the Skyrmion Lattice Domains -- Measurement of the Topological Winding Number -- Measurement of the Skyrmion Helicity Angle -- Dichroism Extinction Rule
Additional Edition:
9783319982519
Additional Edition:
9783319982533
Additional Edition:
Erscheint auch als Druck-Ausgabe 978-3-319-98251-9
Additional Edition:
Printed edition 9783319982519
Additional Edition:
Printed edition 9783319982533
Language:
English
Keywords:
Magnetisches Skyrmion
;
Spintronik
;
Chirale Symmetrie
;
Topologische Phase
;
Röntgenstreuung
;
Dichroismus
;
Extinktion
DOI:
10.1007/978-3-319-98252-6
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