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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© 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Content from this work may be used under the terms of theCreative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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 may be used under the terms of theCreative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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