Friday, July 5, 2013

1307.1278 (N. M. R. Peres et al.)

Strong light-matter interaction in systems described by a modified Dirac

N. M. R. Peres, Jaime E. Santos
The bulk states of some materials, such as topological insulators, are described by a modified Dirac equation. Such systems may have trivial and non-trivial phases. In this paper, we show that in the non-trivial phase a strong light-matter interaction exists in a two-dimensional system, which leads to an optical conductivity at least one order of magnitude larger than that of graphene.
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