Nexus and Dirac lines in topological materials
Heikkilä, T., & Volovik, G. E. (2015). Nexus and Dirac lines in topological materials. New Journal of Physics, 17(September), Article 093019. https://doi.org/10.1088/1367-2630/17/9/093019
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We consider the Z2 topology of the Dirac lines, i.e., lines of band contacts, on an example of graphite.
Four lines—three with topological charge N1 = 1each and one with N1 = -1—merge together near
the H-point and annihilate due to summation law1 ++-= 1110. The merging point is similar
to the real-space nexus, an analog of the Dirac monopole at which the Z2 strings terminate.
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Except where otherwise noted, this item's license is described as © 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Content from this work
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