Topological phases in graphitic cones

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The electronic structure of graphitic cones exhibits distinctive topological features associated with the apical disclinations. Ahranov-Bohm magnetoconductance oscillations (period φ0) are completely absent in rings fabricated from cones with a single pentagonal disclination. Close to the apex, the local density of states changes qualitatively, either developing a cusp which drops to zero at the Fermi energy, or forming a region of nonzero density across EF, a local metallization of graphite.

Original languageEnglish (US)
Pages (from-to)5190-5193
Number of pages4
JournalPhysical review letters
Issue number24
StatePublished - 2000

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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