Publication
Title
High- interfacial ferromagnetism in superlattices
Author
Abstract
Heterostructures of strongly correlated oxides demonstrate various intriguing and potentially useful interfacial phenomena. LaMnO3/SrMnO3 superlattices are presented showcasing a new high-temperature ferromagnetic phase with Curie temperature, TC≈360 K, caused by electron transfer from the surface of the LaMnO3 donor layer into the neighboring SrMnO3 acceptor layer. As a result, the SrMnO3 (top)/LaMnO3 (bottom) interface shows an enhancement of the magnetization as depth-profiled by polarized neutron reflectometry. The length scale of charge transfer, λTF≈2 unit cells, is obtained from in situ growth monitoring by optical ellipsometry, supported by optical simulations, and further confirmed by high resolution electron microscopy and spectroscopy. A model of the inhomogeneous distribution of electron density in LaMnO3/SrMnO3 layers along the growth direction is concluded to account for a complex interplay between ferromagnetic and antiferromagnetic layers in superlattices
Language
English
Source (journal)
Advanced functional materials. - Weinheim
Publication
Weinheim : 2019
ISSN
1616-301X
DOI
10.1002/ADFM.201808270
Volume/pages
(2019) , p. 1-11
Article Reference
1808270
ISI
000535358900008
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Project info
Revealing the source of emergent properties in complex oxides via direct imaging of charge/orbital/spin ordering.
SOLARPAINT: Understanding the durability of light sensitive materials: transferring insights between solar cell physics and the chemistry of paintings.
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 17.09.2019
Last edited 02.10.2024
To cite this reference