Plasmon resonance in individual nanogap electrodes studied using graphene nanoconstrictions as photodetectors.

We achieve direct electrical readout of the wavelength and polarization dependence of the plasmon resonance in individual gold nanogap antennas by positioning a graphene nanoconstriction within the gap as a localized photodetector. The polarization sensitivities can be as large as 99%, while the plasmon-induced photocurrent enhancement is 2-100. The plasmon peak frequency, polarization sensitivity, and photocurrent enhancement all vary between devices, indicating the degree to which the plasmon resonance is sensitive to nanometer-scale irregularities.

[1]  Jiwoong Park,et al.  Imaging of photocurrent generation and collection in single-layer graphene. , 2009, Nano letters.

[2]  N J Halas,et al.  Optical spectroscopy of conductive junctions in plasmonic cavities. , 2010, Nano letters.

[3]  J. Lyding,et al.  The influence of edge structure on the electronic properties of graphene quantum dots and nanoribbons. , 2009, Nature materials.

[4]  A. Campion,et al.  Surface-enhanced Raman scattering , 1998 .

[5]  H. Dai,et al.  Chemically Derived, Ultrasmooth Graphene Nanoribbon Semiconductors , 2008, Science.

[6]  S. Louie,et al.  Electronic transport in polycrystalline graphene. , 2010, Nature materials.

[7]  P. Kim,et al.  Energy band-gap engineering of graphene nanoribbons. , 2007, Physical review letters.

[8]  Zongfu Yu,et al.  Large single-molecule fluorescence enhancements produced by a bowtie nanoantenna , 2009 .

[9]  M. Rooks,et al.  Graphene nano-ribbon electronics , 2007, cond-mat/0701599.

[10]  Tolga Atay,et al.  Large enhancement of fluorescence efficiency from CdSe/ZnS quantum dots induced by resonant coupling to spatially controlled surface plasmons. , 2005, Nano letters.

[11]  D. R. Strachan,et al.  High-on/off-ratio graphene nanoconstriction field-effect transistor. , 2010, Small.

[12]  Juan Carlos Cuevas,et al.  Optical rectification and field enhancement in a plasmonic nanogap. , 2010, Nature nanotechnology.

[13]  D. Goldhaber-Gordon,et al.  Disorder-induced gap behavior in graphene nanoribbons , 2009, 0909.3886.

[14]  D. Goldhaber-Gordon,et al.  Quantum dot behavior in graphene nanoconstrictions. , 2008, Nano letters (Print).

[15]  J. Meindl,et al.  Breakdown current density of graphene nanoribbons , 2009, 0906.4156.

[16]  C. Stampfer,et al.  Energy gaps in etched graphene nanoribbons. , 2008, Physical review letters.

[17]  L. Molenkamp,et al.  Thermo-electric properties of quantum point contacts , 1992, cond-mat/0512612.

[18]  K. Saraswat,et al.  Nanometre-scale germanium photodetector enhanced by a near-infrared dipole antenna , 2008 .

[19]  Nikolay I. Zheludev,et al.  Ultrafast active plasmonics: transmission and control of femtosecond plasmon signals , 2008 .

[20]  A. M. van der Zande,et al.  Photo-thermoelectric effect at a graphene interface junction. , 2009, Nano letters.

[21]  W. Barnes,et al.  Collective resonances in gold nanoparticle arrays. , 2008, Physical review letters.

[22]  M. I. Katsnelson,et al.  Chaotic Dirac Billiard in Graphene Quantum Dots , 2007, Science.

[23]  D. E. Smith,et al.  Controlled fabrication of nanogaps in ambient environment for molecular electronics , 2005, cond-mat/0504112.

[24]  In-Yong Park,et al.  High-harmonic generation by resonant plasmon field enhancement , 2008, Nature.

[25]  Jehoshua Bruck,et al.  Graphene-based atomic-scale switches. , 2008, Nano letters.

[26]  S. Banerjee,et al.  Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils , 2009, Science.

[27]  P. Kim,et al.  Electron transport in disordered graphene nanoribbons. , 2009, Physical review letters.

[28]  O. Martin,et al.  Resonant Optical Antennas , 2005, Science.

[29]  R. Rosenfeld.  Nature , 2009, Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery.

[30]  W. Cai,et al.  Plasmonics for extreme light concentration and manipulation. , 2010, Nature materials.

[31]  A. Bachtold,et al.  Fabrication of large addition energy quantum dots in graphene , 2009, 0909.3278.

[32]  Steven R. Emory,et al.  Probing Single Molecules and Single Nanoparticles by Surface-Enhanced Raman Scattering , 1997, Science.

[33]  D. A. Dunnett.  Classical Electrodynamics , 2020, Nature.

[34]  G S Kino,et al.  Improving the mismatch between light and nanoscale objects with gold bowtie nanoantennas. , 2005, Physical review letters.

[35]  L. Vandersypen,et al.  Electrostatic confinement of electrons in graphene nanoribbons , 2008, 0812.4038.

[36]  James M Tour,et al.  Simultaneous measurements of electronic conduction and Raman response in molecular junctions. , 2008, Nano letters.

[37]  Vahid Sandoghdar,et al.  Enhancement of single-molecule fluorescence using a gold nanoparticle as an optical nanoantenna. , 2006, Physical review letters.