| Author(s): |
Hongki Min; Allan H. MacDonald; |
| Title: |
Origin of Universal Optical Conductivity and Optical Stacking Sequence Identification in Multilayer Graphene |
| Published: |
August 06, 2009 |
| Abstract: |
We predict that the optical conductivity of normal graphene multilayers is close to ςuni=(π/2) e2/h per layer over a broad range of frequencies. The origin of this behavior is an emergent chiral symmetry which is present in normal N-layer stacks when small distant neighbor hopping amplitudes are neglected, and implies that ς (ω) =Nςuni in both low and high frequency limits. We discuss the possibility of obtaining useful information about stacking sequences from optical conductivity measurements. |
| Citation: |
Physical Review Letters |
| Volume: |
103 |
| Pages: |
4 pp. |
| Keywords: |
Graphene;Optical measurements |
| Research Areas: |
Nanophysics, Nanostructured Materials, Condensed Matter Physics, Nanoelectronics and Nanoscale Electronics, Nanomaterials, Optical Physics |
| PDF version: |
 Click here to retrieve PDF version of paper (290KB) |
