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Chiral and Topological Nature of Magnetic Skyrmions

  • Shilei Zhang
Book
  • 2.1k Downloads

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xxi
  2. Shilei Zhang
    Pages 1-30
  3. Shilei Zhang
    Pages 89-114
  4. Shilei Zhang
    Pages 115-116
  5. Back Matter
    Pages 117-117

About this book

Introduction

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.


Keywords

Skyrmions Resonant Elastic X-ray Scattering X-ray Spectroscopy Magnetic Skyrmion X-ray Magnetic Circular Dichroism Spintronics Topological Materials Topological Magnetic Order

Authors and affiliations

  • Shilei Zhang
    • 1
  1. 1.Clarendon Laboratory, Department of PhysicsUniversity of OxfordOxfordUK

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-319-98252-6
  • Copyright Information Springer Nature Switzerland AG 2018
  • Publisher Name Springer, Cham
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-3-319-98251-9
  • Online ISBN 978-3-319-98252-6
  • Series Print ISSN 2190-5053
  • Series Online ISSN 2190-5061
  • Buy this book on publisher's site