Journal article
Third-order terahertz response of gapped, nearly-metallic armchair graphene nanoribbons
Journal of physics. Condensed matter, Vol.28(47), pp.475301-475301
11/30/2016
DOI: 10.1088/0953-8984/28/47/475301
PMID: 27633050
Abstract
We use time dependent perturbation theory to study the terahertz nonlinear response of gapped intrinsic and extrinsic nearly-metallic armchair graphene nanoribbons of finite length under an applied electric field. Generally, the nonlinear conductances exhibit contributions due to single-photon, two-photon, and three-photon processes. The interference between each of these processes results in remarkably complex behavior for the third-order conductances, including quantum dot signatures that should be measurable with a relatively simple experimental configuration. Notably, we observe sharp resonances in the isotropic third-order response due to the Van Hove singularities in the density of states at one-, two-, and three-photon resonances. However, these resonances are absent in the anisotropic third-order response; a result of the overall symmetry of the system.
Details
- Title: Subtitle
- Third-order terahertz response of gapped, nearly-metallic armchair graphene nanoribbons
- Creators
- Yichao Wang - University of IowaDavid R Andersen - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of physics. Condensed matter, Vol.28(47), pp.475301-475301
- Publisher
- IOP Publishing
- DOI
- 10.1088/0953-8984/28/47/475301
- PMID
- 27633050
- ISSN
- 0953-8984
- eISSN
- 1361-648X
- Number of pages
- 9
- Language
- English
- Date published
- 11/30/2016
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984197174802771
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