Topological Hopf and Chain Link Semimetal States and Their Application to Co_{2}MnGa.


Topological semimetals can be classified by the connectivity and dimensionality of the band crossings in momentum space. The band crossings of a Dirac, Weyl, or an unconventional fermion semimetal are zero-dimensional (0D) points, whereas the band crossings of a nodal-line semimetal are one-dimensional (1D) closed loops. Here we propose that the presence of… (More)
DOI: 10.1103/PhysRevLett.119.156401


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