Surface_Multiferroics_PRB_1.pdf (8.29 MB)
Theory of surface-induced multiferroicity in magnetic materials, thin films, and multilayers
journal contribution
posted on 2021-08-03, 09:07 authored by Ahmed TarkhanyAhmed Tarkhany, Marco DiscacciatiMarco Discacciati, Joseph BetourasJoseph BetourasWe present a theoretical study of the onset of electric polarization close to a surface in magnetic materials and in thin films and multilayers. We consider two different paths that lead to the onset of multiferroic behavior at the boundary in materials that are bulk collinear ferromagnets (or even antiferromagnets). These two paths are distinguished by the presence or absence of a surface-induced Dzyaloshinskii-Moriya interaction, which can be taken into account through Lifshitz invariants in the free energy of the system. Experimental consequences are discussed in light of the developed theory.
Funding
EPSRC Grant No. EP/P003052/1
Regional Government of Kurdistan-Iraq
EPSRC Grant No. EP/R014604/1
History
School
- Science
Department
- Mathematical Sciences
- Physics
Published in
Physical Review BVolume
103Issue
20Publisher
American Physical SocietyVersion
- AM (Accepted Manuscript)
Rights holder
© American Physical SocietyPublisher statement
This paper was accepted for publication in the journal Physical Review B and the definitive published version is available at https://doi.org/10.1103/PhysRevB.103.205409.Acceptance date
2021-04-16Publication date
2021-05-10Copyright date
2021ISSN
2469-9950eISSN
2469-9969Publisher version
Language
- en