Spin spirals and charge textures in transition-metal-oxide heterostructures Alex Frano

Format:

Book

Author/Creator:

Frano, Alex, author.

Series:

Springer theses 2190-5053

Language:

English

Subjects (All):

Transition metal oxides.

X-rays--Scattering.

X-rays.

x-ray scattering.

Physical Description:

1 online resource

Place of Publication:

Cham Springer 2014

Language Note:

English

Summary:

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

Contents:

The System: Transition Metal Oxides and Their Heterostructures

The Technique: Resonant X-ray Scattering

The Nickelates: A Spin Density Wave

The Cuprates: A Charge Density Wave

Notes:

"Doctoral thesis accepted by the Technical University of Berlin, Germany"

Includes bibliographical references

Online resource; title from PDF title page (SpringerLink, viewed June 10, 2014)

Other Format:

Printed edition:

ISBN:

9783319070704

3319070703

331907069X

9783319070698

OCLC:

881231583

Access Restriction:

Restricted for use by site license