On demand laser-induced frequency tuning of coherent magnons in a nanometer-thick magnet at room temperature.

ABSTRACT: The collective vibrational and magnetic response of a solid to external stimuli is encoded in the dispersion relations of phonons and magnons, respectively. Recently, the coherent drive and nonlinear manipulation of collective lattice and magnetic excitations via laser pulses has been explored, as a route to control the non-equilibrium properties of quantum materials. Device concepts that leverage coupled multiphysical dynamics must exhibit laser-induced frequency tunability controllable through external parameters. Although previous works have shown that optically driven excitations in the midinfrared can manipulate magnon frequencies, inducing deterministic red- or blue-shifts of the magnon frequency in the same material is still elusive. Here we demonstrate this concept in a nanometer-t

SUBMITTER: Wiechert V 

PROVIDER: S-EPMC12775049 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature