Ordering Phenomena in Rare-Earth Nickelate Heterostructures

Matthias Hepting (Autor)

Buch | Softcover

XVI, 147 Seiten

2018 | Softcover reprint of the original 1st ed. 2017
Springer International Publishing (Verlag)
9783319868806 (ISBN)

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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.

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.

Erscheinungsdatum	05.03.2022
Reihe/Serie	Springer Theses
Zusatzinfo	XVI, 147 p. 63 illus., 56 illus. in color.
Verlagsort	Cham
Sprache	englisch
Maße	155 x 235 mm
Gewicht	260 g
Themenwelt	Naturwissenschaften ► Chemie ► Analytische Chemie
	Naturwissenschaften ► Physik / Astronomie ► Festkörperphysik
	Technik ► Elektrotechnik / Energietechnik
	Technik ► Maschinenbau
Schlagworte	Electronic Phase Transitions of Nickelate • Magnetic Phase Transitions of Nickelate • Magnetic Resonant Elastic X-Ray Scattering • Raman Spectroscopy on Thin Films • Spatially Confined Conduction Electrons • Spin Density Wave Phases • strongly correlated electron systems
ISBN-13	9783319868806 / 9783319868806
Zustand	Neuware