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Ordering phenomena in rare-earth nic...

Hepting, Matthias.

Ordering phenomena in rare-earth nickelate heterostructures

Record Type:	Electronic resources : Monograph/item
Title/Author:	Ordering phenomena in rare-earth nickelate heterostructuresby Matthias Hepting.
Author:	Hepting, Matthias.
Published:	Cham :Springer International Publishing :2017.
Description:	xvi, 147 p. :ill., digital ;24 cm.
Contained By:	Springer eBooks
Subject:	Heterostructures.
Online resource:	http://dx.doi.org/10.1007/978-3-319-60531-9
ISBN:	9783319605319$q(electronic bk.)

Ordering phenomena in rare-earth nickelate heterostructures
Hepting, Matthias.

Ordering phenomena in rare-earth nickelate heterostructures[electronic resource] /by Matthias Hepting. - Cham :Springer International Publishing :2017. - xvi, 147 p. :ill., digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

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.

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.

ISBN: 9783319605319$q(electronic bk.)

Standard No.: 10.1007/978-3-319-60531-9doiSubjects--Topical Terms:

204097
Heterostructures.

LC Class. No.: TK7871.85

Dewey Class. No.: 620.1892

Ordering phenomena in rare-earth nickelate heterostructures
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520 $a 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.
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