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Mid-infrared plasmons in scaled graphene nanostructures
Hugen Yan, Tony Low, Wenjuan Zhu +6
Plasmonics takes advantage of the collective response of electrons to electromagnetic waves, enabling dramatic scaling of optical devices beyond the diffraction limit. Here, we dem…
Plasmonics of coupled graphene micro-structures
Hugen Yan, Fengnian Xia, Zhiqiang Li +1
The optical response of graphene micro-structures, such as micro-ribbons and disks, is dominated by the localized plasmon resonance in the far infrared (IR) spectral range. An ense…
Quantum behavior of graphene transistors near the scaling limit
Yanqing Wu, Vasili Perebeinos, Yu-ming Lin +3
The superior intrinsic properties of graphene have been a key research focus for the past few years. However, external components, such as metallic contacts, serve not only as esse…
Magnetic field tuning of terahertz Dirac plasmons in graphene
Hugen Yan, Zhiqiang Li, Xuesong Li +3
Boundaries and edges of a two dimensional system lower its symmetry and are usually regarded, from the point of view of charge transport, as imperfections. Here we present a first…
Photoconductivity of biased graphene
Marcus Freitag, Tony Low, Fengnian Xia +1
Graphene is a promising candidate for optoelectronic applications such as photodetectors, terahertz imagers, and plasmonic devices. The origin of photoresponse in graphene junction…
Manipulating infrared photons using plasmons in transparent graphene superlattices
Hugen Yan, Xuesong Li, Bhupesh Chandra +6
Superlattices are artificial periodic nanostructures which can control the flow of electrons. Their operation typically relies on the periodic modulation of the electric potential…