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Ordering Phenomena in Rare-Earth Nickelate Heterostructures /

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...

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Bibliographic Details
Main Authors: Hepting, Matthias (Author)
Corporate Authors: SpringerLink (Online service)
Published: Springer International Publishing : Imprint: Springer,
Publisher Address: Cham :
Publication Dates: 2017.
Literature type: eBook
Language: English
Series: Springer Theses, Recognizing Outstanding Ph.D. Research,
Subjects:
Physics.
Superconductivity.
Superconductors.
Surfaces (Physics)
Interfaces (Physical sciences)
Thin films.
Spectroscopy.
Microscopy.
Materials science.
Strongly Correlated Systems, Superconductivity.
Spectroscopy and Microscopy.
Surface and Interface Science, Thin Films.
Characterization and Evaluation of Materials.
Online Access: http://dx.doi.org/10.1007/978-3-319-60531-9
Summary: 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) demonstratingfull 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. .
Carrier Form: 1 online resource(XVI,147pages): illustrations.
ISBN: 9783319605319
Index Number: QC611
CLC: O484
Contents: Introduction: Transition Metal Oxides and their Heterostructures -- The Rare-earth Nickelates -- Experimental Techniques -- Tunable Order Parameters in Nickelate Heterostructures -- Complex Magnetic Order in Nickelate Slabs.

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