Multiple magnon modes in the Co3Sn2S2Weyl semimetal candidate O. O. Shvetsov, V. D. Esin, A. V. Timonina, N. N. Kolesnikov and E. V. Deviatov EPL, 127 5 (2019) 57002 Published online: 10 October 2019 DOI: 10.1209/0295-5075/127/57002