Giant chiral magnetoelectric oscillations in a van der Waals multiferroic.

ABSTRACT: Helical spin structures are expressions of magnetically induced chirality, entangling the dipolar and magnetic orders in materials^1-4. The recent discovery of helical van der Waals multiferroics down to the ultrathin limit raises prospects of large chiral magnetoelectric correlations in two dimensions^5,6. However, the exact nature and magnitude of these couplings have remained unknown so far. Here we perform a precision measurement of the dynamical magnetoelectric coupling for an enantiopure domain in an exfoliated van der Waals multiferroic. We evaluate this interaction in resonance with a collective electromagnon mode, capturing the impact of its oscillations on the dipolar and magnetic orders of the material with a suite of ultrafast optical probes. Our data show a

SUBMITTER: Gao FY 

PROVIDER: S-EPMC11306099 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature