摘要
Recently,a couple of Science papers[1,2]have reported the existence of Fermi arcs on the surface of a ferromagnetic compound,namely Co3Sn2S2,which was first proposed to be a magnetic Weyl semimetal(WSM)according to the giant anomalous Hall effect[3,4].The new evidence is in agreement with this proposal,suggesting that the magnetic WSM has been found after a nearly eight year research[5,6].This finding,along with the discovery of nonmagnetic WSMs of TaAs family in 2015[7,8],has completed the WSM classification.In comparison with the nonmagnetic WSM,magnetic WSM has a long-range magnetic order coupled with Weyl nodes.Furthermore,it offers more ways to control and explore the properties of WSMs.
基金
supported by the National Key Research and Development Program of China(Grant Nos.2016YFA0300600,and 2018YFA0305700)
the National Natural Science Foundation of China(Grant No.11674369)
the K.C.Wong Education Foundation(Grant No.GJTD-2018-01)
