Anomalous Transport in Topological Semimetals
We developed of a theory of the anomalous Hall effect in Heusler compounds, in which the interplay of topology and crystalline symmetries leads to very interesting anomalous transport properties. Our theory lead to the discovery of new magnetic Weyl semimetals with large anomalous Hall effects in the Co-Sn-S system. We further predicted the existence of an anomalous Hall effect in thin films of this materials, for which evidence has recently been found in STM experiments (arXiv:1910.11205).
Selected Publications
Muechler, L., Liu, E., Gayles, J., Xu, Q., Felser, C. & Sun, Y. Emerging chiral edge states from the confinement of a magnetic Weyl semimetal in Co3Sn2S2. Phys. Rev. B 101, 115106 (2020).
Liu, E., Sun, Y., Muechler, L., Sun, A., Jiao, L., Kroder, J., SüSS, V., Borrmann, H., Wang, W., Schnelle, W., Wirth, S., Goennenwein, S. T. B. & Felser, C. Giant anomalous Hall effect in a ferromagnetic kagome-lattice semimetal. Nat. Phys. 14, 1125 (2018).
Manna, K., Muechler, L., Kao, T.-H., Stinshoff, R., Zhang, Y., Gooth, J., Kumar, N., Kreiner, G., Koepernik, K., Car, R., et al. From colossal to zero: controlling the anomalous Hall effect in magnetic Heusler compounds via Berry curvature design. Phy. Rev. X 8, 041045 (2018).