Can I read Light Absorption in Deformed Graphene on EtoBox?

Light Absorption in Deformed Graphene by Hernández-Ortiz, Saúl; Valenzuela, David; Raya, Alfredo; Sánchez-Madrigal, Saúl is a scholarly article available to read on EtoBox.

What is Light Absorption in Deformed Graphene about?

We model the low energy dynamics of graphene in the continuum in terms of a version of Reduced Quantum Electrodynamics restricting fermions to a (2+1)-dimensional brane, whilst photons remain within the (3+1)-dimensional bulk. For charge carriers, besides the Dirac mass gap, we consider a Haldane mass term which is induced by parametrizing an effective parity $\mathcal{P}$ and time-reversal $\mathcal{T}$ symmetry breaking that occurs on the brane when deformations of the honeycomb array are such that the equivalence between sublattices is lost. We make use of the relativistic Kubo formula and carry out an explicit calculation of the transverse conductivity. As expected, the filling factor is a half (in natural units) for each fermion species. Furthermore, assuming that a sample of this material is radiated perpendicularly with polarized monochromatic light of frequency $\omega$, from the modified Maxwell's equations we study the problem of light absorption in graphene in terms of the said conductivity. We observe an analog effect to the Faraday Rotation due the Induced Mass (FRIM)--and not to an external magnetic field-- in which light penetrating the sample changes its angle of po

Author

Hernández-Ortiz, Saúl; Valenzuela, David; Raya, Alfredo; Sánchez-Madrigal, Saúl

Published

2015

Language

EN