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Origin of Universal Optical Conductivity and Optical Stacking Sequence Identification in Multilayer Graphene

Published

Author(s)

Hongki Min, Allan H. MacDonald

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

Keywords

Graphene, Optical measurements

Citation

Min, H. and MacDonald, A. (2009), Origin of Universal Optical Conductivity and Optical Stacking Sequence Identification in Multilayer Graphene, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=902107 (Accessed June 21, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created August 6, 2009, Updated February 19, 2017