Data for the article "Long-distance spin-transport across the Morin phase transition up to room temperature in the ultra-low damping alpha-Fe2O3 antiferromagnet"

R.Lacknowledges the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreements FAST number 752195. R.L.,A.R.and M.K. acknowledge support from the Graduate School of Excellence Materials Science in Mainz (MAINZ) DFG 266, the DAAD (Spintronics network, Project No. 57334897) and all groups from Mainz acknowledge that this work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) -SFB TRR 173 –268565370 (projects A01, A03, A11, B02, B11 and B12). R.L. and M.K. acknowledge financial support from the Horizon 2020 Framework Programme of the European Commission under FET-Open grant agreement no. 863155 (s-Nebula).R.L., A.R., and M.K. acknowledge support from the DFG project number 423441604. O.G. and J.S. acknowledge the Alexander von Humboldt Foundation,the ERC Synergy Grant SC2 (No. 610115). This work was also supported by the Max Planck Graduate Centre (MPGC). A.Q, A.B., M.K. weresupported by the Research Council of Norway through its Centres of Excellence funding scheme, project number 262633 "QuSpin". V.Backnowledges financial support fromthe French national research agency (ANR) (Grant Number ANR-15-CE24-0015-01) and the bottom-up exploratory program of the CEA (Grant Number PE-18P31-ELSA).