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Plasmonic Nickel Nanoantennas

Authors

  • Jianing Chen,

    1. CIC nanoGUNE Consolider, 20018 Donostia-San Sebstián, Spain
    2. Centro de Fisica de Materiales (CSIC-UPV/EHU) and Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastián, Spain
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  • Pablo Albella,

    1. CIC nanoGUNE Consolider, 20018 Donostia-San Sebstián, Spain
    2. Centro de Fisica de Materiales (CSIC-UPV/EHU) and Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastián, Spain
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  • Zhaleh Pirzadeh,

    1. Department of Applied Physics, Chalmers University of Technology, 41296 Gothenburg, Sweden
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  • Pablo Alonso-González,

    1. CIC nanoGUNE Consolider, 20018 Donostia-San Sebstián, Spain
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  • Florian Huth,

    1. CIC nanoGUNE Consolider, 20018 Donostia-San Sebstián, Spain
    2. Neaspec GmbH, Bunsenstrasse 5, 82152 Munich, Germany
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  • Stefano Bonetti,

    1. Materials Physics, Royal Institute of Technology (KTH), Electrum 229, 164 40 Kista, Sweden
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  • Valentina Bonanni,

    1. Department of Applied Physics, Chalmers University of Technology, 41296 Gothenburg, Sweden
    2. Materials Physics, Royal Institute of Technology (KTH), Electrum 229, 164 40 Kista, Sweden
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  • Johan Åkerman,

    1. Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
    2. Materials Physics, Royal Institute of Technology (KTH), Electrum 229, 164 40 Kista, Sweden
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  • Josep Nogués,

    1. CIN2(ICN-CSIC) and Universitat Autónoma de Barcelona, Catalan Institute of Nanotechnology (ICN), Campus UAB, 08193 Bellaterra (Barcelona), Spain
    2. Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
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  • Paolo Vavassori,

    1. CIC nanoGUNE Consolider, 20018 Donostia-San Sebstián, Spain
    2. IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
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  • Alexandre Dmitriev,

    1. Department of Applied Physics, Chalmers University of Technology, 41296 Gothenburg, Sweden
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  • Javier Aizpurua,

    1. Centro de Fisica de Materiales (CSIC-UPV/EHU) and Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastián, Spain
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  • Rainer Hillenbrand

    Corresponding author
    1. CIC nanoGUNE Consolider, 20018 Donostia-San Sebstián, Spain
    2. IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
    • CIC nanoGUNE Consolider, 20018 Donostia-San Sebstián, Spain.
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Abstract

The fundamental optical properties of pure nickel nanostructures are studied by far-field extinction spectroscopy and optical near-field microscopy, providing direct experimental evidence of the existence of particle plasmon resonances predicted by theory. Experimental and calculated near-field maps allow for unambiguous identification of dipolar plasmon modes. By comparing calculated near-field and far-field spectra, dramatic shifts are found between the near-field and far-field plasmon resonances, which are much stronger than in gold nanoantennas. Based on a simple damped harmonic oscillator model to describe plasmonic resonances, it is possible to explain these shifts as due to plasmon damping.

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