Probing emergent excitations with middle-energy electron energy loss spectroscopy Yujuan Pei, Xiaoran Liu, Fangdi Wen, M. Kareev, Ruyi Zhang, Yang Song, Jiachang Bi, Yanwei Cao and Jak Chakhalian EPL, 128 5 (2019) 57001 Published online: 04 February 2020 DOI: 10.1209/0295-5075/128/57001