Coherent helicity-dependent spin-phonon oscillations in the ferromagnetic van der Waals crystal CrI₃.

ABSTRACT: The discovery of two-dimensional systems hosting intrinsic magnetic order represents a seminal addition to the rich landscape of van der Waals materials. CrI₃ is an archetypal example, where the interdependence of structure and magnetism, along with strong light-matter interactions, provides a new platform to explore the optical control of magnetic and vibrational degrees of freedom at the nanoscale. However, the nature of magneto-structural coupling on its intrinsic ultrafast timescale remains a crucial open question. Here, we probe magnetic and vibrational dynamics in bulk CrI₃ using ultrafast optical spectroscopy, revealing spin-flip scattering-driven demagnetization and strong transient exchange-mediated interactions between lattice vibrations and spin oscillation

SUBMITTER: Padmanabhan P 

PROVIDER: S-EPMC9345964 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature