Domain-wall-induced electromagnons in multiferroics - CentraleSupélec Access content directly
Journal Articles Physical Review Materials Year : 2022

Domain-wall-induced electromagnons in multiferroics


Using an atomistic approach, we predict the emergence of new hybrid quasi-particles, namely domain-wall-induced electromagnons, that arise from dynamical couplings between magnons and optical phonons in systems possessing ferroelectric domain walls. These quasi-particles induce THz resonances in magnetoelectric responses and preferentially localize either near the domain walls or near the middle of domains. Such behavior is explained through dispersion analysis that allows to track the emergent multi-domain excitations back to single-domain magnetoelectric (ME) modes. The latter, scattered by a periodic array of domain walls, are shown to endow the domainwall-induced electromagnons with a mixed localized mode and a standing-or propagating-wave characters. Such features can be exploited to reach strikingly large ME conversion and designing more reliable and ultrafast ME devices with less energy consumption and using, e.g., local probes.
Fichier principal
Vignette du fichier
Charles DOI 10.1103-PhysRevMaterials.6.034403.pdf (4.41 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03618401 , version 1 (24-03-2022)



S Sayedaghaee, Sergey Prosandeev, Sergei Prokhorenko, Yousra Nahas, Charles Paillard, et al.. Domain-wall-induced electromagnons in multiferroics. Physical Review Materials, 2022, 6 (3), pp.034403. ⟨10.1103/PhysRevMaterials.6.034403⟩. ⟨hal-03618401⟩
14 View
53 Download



Gmail Facebook Twitter LinkedIn More