Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2008-10-11
Phys. Rev. Lett 102, 106401 (2009)
Physics
Condensed Matter
Disordered Systems and Neural Networks
5 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.102.106401
We investigate disordered graphene with strong long-range impurities. Contrary to the common belief that delocalization should persist in such a system against any disorder, as the system is ex-pected to be equivalent to a disordered two-dimensional Dirac Fermionic system, we find that states near the Dirac points are localized for sufficiently strong disorder and the transition between the localized and delocalized states is of Kosterlitz-Thouless type. Our results show that the transition originates from bounding and unbounding of local current vortices.
Bernevig Andrei B.
Hu Jiangping
Liu Wei-Min
Wang Rosalind X.
Xie Xin-Chen
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