Subpicosecond metamagnetic phase transition in FeRh driven by non-equilibrium electron dynamics.

ABSTRACT: Femtosecond light-induced phase transitions between different macroscopic orders provide the possibility to tune the functional properties of condensed matter on ultrafast timescales. In first-order phase transitions, transient non-equilibrium phases and inherent phase coexistence often preclude non-ambiguous detection of transition precursors and their temporal onset. Here, we present a study combining time-resolved photoelectron spectroscopy and ab-initio electron dynamics calculations elucidating the transient subpicosecond processes governing the photoinduced generation of ferromagnetic order in antiferromagnetic FeRh. The transient photoemission spectra are accounted for by assuming that not only the occupation of electronic states is modified during the photoexcitation process. Inste

SUBMITTER: Pressacco F 

PROVIDER: S-EPMC8384879 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature