Dislocations and torsion in graphene and related systems

Details Dislocations and torsion in graphene and related systems Dislocations and torsion in graphene and related systems

2009-09-22

arxiv.org/abs/0909.4068v1

Nucl. Phys. B 828, 625 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 5 figures

Scientific paper

10.1016/j.nuclphysb.2009.11.012

A continuum model to study the influence of dislocations on the electronic properties of condensed matter systems is described and analyzed. The model is based on a geometrical formalism that associates a density of dislocations with the torsion tensor and uses the technique of quantum field theory in curved space. When applied to two-dimensional systems with Dirac points like graphene we find that dislocations couple in the form of vector gauge fields similar to these arising from curvature or elastic strain. We also describe the ways to couple dislocations to normal metals with a Fermi surface.

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