Scientific Reports 2, Article number: 0583 (2012); Published: 16 August 2012; Updated: 28 February 2014

This Article contains a typographical error in an equation in the Methods section:

“ε1 = μ1 = 1 − ω2/(ωp2 + iωΓ)” should read “ε1 = μ1 = 1 − ωp2/(ω2 + iωΓ)”.

In addition, the two thin red arrows representing the direction of the wave vector should be reversed in Figure 2a. The correct Figure 2a appears below as Figure 1.

figure 1