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Spin Spirals and Charge Textures in Transition-Metal-Oxide Heterostructures

  • Book
  • © 2014

Overview

Authors:
  1. Alex Frano

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

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  • Nominated as an outstanding Ph.D. thesis by the Max Planck Institute for Solid-State Research, Stuttgart, Germany
  • Provides a clear summary of the properties of nickelates and cuprates, particularly useful for readers new to the field of transition-metal-oxides
  • Includes a detailed outline of experimental and theoretical principles of x-ray diffraction
  • Descriptive pictorials facilitate an intuitive understanding of the results
  • Includes supplementary material: sn.pub/extras

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

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Table of contents (4 chapters)

  1. Front Matter

    Pages i-xiv
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  2. The System: Transition Metal Oxides and Their Heterostructures

    • Alex Frano
    Pages 1-18

  3. The Technique: Resonant X-ray Scattering

    • Alex Frano
    Pages 19-46

  4. The Nickelates: A Spin Density Wave

    • Alex Frano
    Pages 47-89

  5. The Cuprates: A Charge Density Wave

    • Alex Frano
    Pages 91-138

  6. Back Matter

    Pages 139-149
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Keywords

About this book

This thesis presents the results of resonant and non-resonant x-ray scattering experiments demonstrating the control of collective ordering phenomena in epitaxial nickel-oxide and copper-oxide based superlattices. Three outstanding results are reported: (1) LaNiO3-LaAlO3 superlattices with fewer than three consecutive NiO2 layers exhibit a novel spiral spin density wave, whereas superlattices with thicker nickel-oxide layer stacks remain paramagnetic. The magnetic transition is thus determined by the dimensionality of the electron system. The polarization plane of the spin density wave can be tuned by epitaxial strain and spatial confinement of the conduction electrons. (2) Further experiments on the same system revealed an unusual structural phase transition controlled by the overall thickness of the superlattices. The transition between uniform and twin-domain states is confined to the nickelate layers and leaves the aluminate layers unaffected. (3) Superlattices based on the high-temperature superconductor YBa2Cu3O7 exhibit an incommensurate charge density wave order that is stabilized by heterointerfaces. These results suggest that interfaces can serve as a powerful tool to manipulate the interplay between spin order, charge order, and superconductivity in cuprates and other transition metal oxides.

Authors and Affiliations

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

    Alex Frano

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