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Title: Giant magnetoelectric effect in pure manganite-manganite heterostructures

Abstract

Obtaining strong magnetoelectric couplings in bulk materials and heterostructures is an ongoing challenge. We demonstrate that manganite heterostructures of the form (Insulator) /(LaMnO3)(n)/Interface/(CaMnO3)(n)/(Insulator) show strong multiferroicity in magnetic manganites where ferroelectric polarization is realized by charges leaking from LaMnO3 to CaMnO3 due to repulsion. Here, an effective nearest-neighbor electron-electron (electron-hole) repulsion (attraction) is generated by cooperative electron-phonon interaction. Double exchange, when a particle virtually hops to its unoccupied neighboring site and back, produces magnetic polarons that polarize antiferromagnetic regions. Thus a striking giant magnetoelectric effect ensues when an external electrical field enhances the electron leakage across the interface.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
OSTI Identifier:
1421977
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B; Journal Volume: 96; Journal Issue: 19
Country of Publication:
United States
Language:
English

Citation Formats

Paul, Sanjukta, Pankaj, Ravindra, Yarlagadda, Sudhakar, Majumdar, Pinaki, and Littlewood, Peter B. Giant magnetoelectric effect in pure manganite-manganite heterostructures. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.96.195130.
Paul, Sanjukta, Pankaj, Ravindra, Yarlagadda, Sudhakar, Majumdar, Pinaki, & Littlewood, Peter B. Giant magnetoelectric effect in pure manganite-manganite heterostructures. United States. doi:10.1103/PhysRevB.96.195130.
Paul, Sanjukta, Pankaj, Ravindra, Yarlagadda, Sudhakar, Majumdar, Pinaki, and Littlewood, Peter B. Wed . "Giant magnetoelectric effect in pure manganite-manganite heterostructures". United States. doi:10.1103/PhysRevB.96.195130.
@article{osti_1421977,
title = {Giant magnetoelectric effect in pure manganite-manganite heterostructures},
author = {Paul, Sanjukta and Pankaj, Ravindra and Yarlagadda, Sudhakar and Majumdar, Pinaki and Littlewood, Peter B.},
abstractNote = {Obtaining strong magnetoelectric couplings in bulk materials and heterostructures is an ongoing challenge. We demonstrate that manganite heterostructures of the form (Insulator) /(LaMnO3)(n)/Interface/(CaMnO3)(n)/(Insulator) show strong multiferroicity in magnetic manganites where ferroelectric polarization is realized by charges leaking from LaMnO3 to CaMnO3 due to repulsion. Here, an effective nearest-neighbor electron-electron (electron-hole) repulsion (attraction) is generated by cooperative electron-phonon interaction. Double exchange, when a particle virtually hops to its unoccupied neighboring site and back, produces magnetic polarons that polarize antiferromagnetic regions. Thus a striking giant magnetoelectric effect ensues when an external electrical field enhances the electron leakage across the interface.},
doi = {10.1103/PhysRevB.96.195130},
journal = {Physical Review B},
number = 19,
volume = 96,
place = {United States},
year = {Wed Nov 01 00:00:00 EDT 2017},
month = {Wed Nov 01 00:00:00 EDT 2017}
}