Neutron scattering on correlated topological materials

Recent theoretical predictions and experimental realizations of exotic quasi-particles and topological excitations in condensed matter have led to tremendous research interests in topological quantum materials. Especially, correlated topological materials, such as e.g. magnetic Dirac and Weyl semimetals, and intrinsic magnetic topological insulators, in which both non-trivial topology of single-electron band structures and electron-electron correlations are essential ingredients, have emerged as an exciting platform to explore novel electronic and magnetic phenomena. In this talk, I will present a couple of selected examples of our recent neutron scattering studies along this line, with particular emphasis on the applications of polarized neutron scattering in disentangling complex magnetic orders