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Ordering Phenomena in Rare-Earth Nickelate Heterostructures

  • Book
  • © 2017

Overview

Authors:
  1. Matthias Hepting

    1. Max Planck Institute for Solid State Research, Stuttgart, Germany

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  • Nominated as an outstanding PhD thesis by the Max Planck Institute for Solid State Research, Stuttgart, Germany
  • Offers a detailed description of the Raman measurement procedure to extract the phonon signal of exceptionally thin films of nickelate
  • Adopts and uses the Raman measurement procedure to measure other thin transition metal oxide films and similar material systems
  • Provides an extensive introduction to the basics of magnetic resonant elastic x-ray scattering and its applicability to determining complex magnetic structures in various material systems
  • Includes supplementary material: sn.pub/extras

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (5 chapters)

  1. Front Matter

    Pages i-xvi
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  2. Introduction: Transition Metal Oxides and Their Heterostructures

    • Matthias Hepting
    Pages 1-12

  3. The Rare-Earth Nickelates

    • Matthias Hepting
    Pages 13-29

  4. Experimental Techniques

    • Matthias Hepting
    Pages 31-67

  5. Tunable Order Parameters in Nickelate Heterostructures

    • Matthias Hepting
    Pages 69-107

  6. Complex Magnetic Order in Nickelate Slabs

    • Matthias Hepting
    Pages 109-144

  7. Back Matter

    Pages 145-147
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Keywords

About this book

This thesis presents an experimental study of ordering phenomena in rare-earth nickelate-based heterostructures by means of inelastic Raman light scattering and elastic resonant x-ray scattering (RXS). Further, it demonstrates that the amplitude ratio of magnetic moments at neighboring nickel sites can be accurately determined by RXS in combination with a correlated double cluster model, and controlled experimentally through structural pinning of the oxygen positions in the crystal lattice. The two key outcomes of the thesis are: (a) demonstrating full control over the charge/bond and spin order parameters in specifically designed praseodymium nickelate heterostructures and observation of a novel spin density wave phase in absence of the charge/bond order parameter, which confirms theoretical predictions of a spin density wave phase driven by spatial confinement of the conduction electrons; and (b) assessing the thickness-induced crossover between collinear and non-collinear spin structures in neodymium nickelate slabs, which is correctly predicted by drawing on density functional theory.

Authors and Affiliations

  • Max Planck Institute for Solid State Research, Stuttgart, Germany

    Matthias Hepting

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