Journal
NANO LETTERS
Volume 12, Issue 5, Pages 2470-2474Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl300572y
Keywords
Graphene; terahertz; magneto-optics; magnetoplasmons; Faraday rotation
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Funding
- Swiss National Science Foundation (SNSF) through the National Centre of Competence in Research Materials with Novel Electronic Properties-MaNEP [200021-120347, IZ73Z0-128026]
- projects EuromagnetII [GACR P204/10/1020, GRA/10/E006]
- ESF
- Swiss National Science Foundation (SNF) [200021_120347] Funding Source: Swiss National Science Foundation (SNF)
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We show that in graphene epitaxially grown on SiC the Drude absorption is transformed into a strong terahertz plasmonic peak due to natural nanoscale inhomogeneities, such as substrate terraces and wrinkles. The excitation of the plasmon modifies dramatically the magneto-optical response and in particular the Faraday rotation. This makes graphene a unique playground for plasmon-controlled magneto-optical phenomena thanks to a cyclotron mass 2 orders of magnitude smaller than in conventional plasmonic materials such as noble metals.
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