3D Stagger model atmospheres with FreeEOS - I. Exploring the impact of microphysics on the SunYixiao Zhou, Anish M. Amarsi, Victor Aguirre Børsen-Koch, Klara G. Karlsmose, Remo Collet and Thomas NordlanderA&A, 677 (2023) A98DOI: https://doi.org/10.1051/0004-6361/202346398