Topological Phases in Graphitic Cones

Details Topological Phases in Graphitic Cones Topological Phases in Graphitic Cones

2000-11-30

arxiv.org/abs/cond-mat/0011530v1

Physical Review Letters 85, 5190 (2000)

Physics

Condensed Matter

Materials Science

4 pages, RevTeX 4, 3 PostScript figures

Scientific paper

10.1103/PhysRevLett.85.5190

The electronic structure of graphitic cones exhibits distinctive topological features associated with the apical disclinations. Aharonov-Bohm magnetoconductance oscillations (period Phi_0) 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 the Fermi energy, a local metalization of graphene.

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