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Accurate prediction of the optical properties of nanoalloys with both plasmonic and magnetic elements

Author

Listed:
  • Vito Coviello

    (Università di Padova)

  • Denis Badocco

    (Università di Padova)

  • Paolo Pastore

    (Università di Padova)

  • Martina Fracchia

    (University of Pavia, Department of Chemistry
    National Inter-University Consortium for Materials Science and Technology)

  • Paolo Ghigna

    (University of Pavia, Department of Chemistry
    National Inter-University Consortium for Materials Science and Technology)

  • Alessandro Martucci

    (National Inter-University Consortium for Materials Science and Technology
    University of Padova)

  • Daniel Forrer

    (Università di Padova
    CNR – ICMATE)

  • Vincenzo Amendola

    (Università di Padova
    National Inter-University Consortium for Materials Science and Technology)

Abstract

The alloying process plays a pivotal role in the development of advanced multifunctional plasmonic materials within the realm of modern nanotechnology. However, accurate in silico predictions are only available for metal clusters of just a few nanometers, while the support of modelling is required to navigate the broad landscape of components, structures and stoichiometry of plasmonic nanoalloys regardless of their size. Here we report on the accurate calculation and conceptual understanding of the optical properties of metastable alloys of both plasmonic (Au) and magnetic (Co) elements obtained through a tailored laser synthesis procedure. The model is based on the density functional theory calculation of the dielectric function with the Hubbard-corrected local density approximation, the correction for intrinsic size effects and use of classical electrodynamics. This approach is built to manage critical aspects in modelling of real samples, as spin polarization effects due to magnetic elements, short-range order variability, and size heterogeneity. The method provides accurate results also for other magnetic-plasmonic (Au-Fe) and typical plasmonic (Au-Ag) nanoalloys, thus being available for the investigation of several other nanomaterials waiting for assessment and exploitation in fundamental sectors such as quantum optics, magneto-optics, magneto-plasmonics, metamaterials, chiral catalysis and plasmon-enhanced catalysis.

Suggested Citation

  • Vito Coviello & Denis Badocco & Paolo Pastore & Martina Fracchia & Paolo Ghigna & Alessandro Martucci & Daniel Forrer & Vincenzo Amendola, 2024. "Accurate prediction of the optical properties of nanoalloys with both plasmonic and magnetic elements," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45137-x
    DOI: 10.1038/s41467-024-45137-x
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    References listed on IDEAS

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    1. Yang, Chao & Wang, Zheng-Chuan & Su, Gang, 2021. "Spin-polarized plasmon in ferromagnetic metals," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 575(C).
    2. Jonathan A. Scholl & Ai Leen Koh & Jennifer A. Dionne, 2012. "Quantum plasmon resonances of individual metallic nanoparticles," Nature, Nature, vol. 483(7390), pages 421-427, March.
    3. Judit Budai & Zsuzsanna Pápa & Péter Petrik & Péter Dombi, 2022. "Ultrasensitive probing of plasmonic hot electron occupancies," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    4. Shuai Chen & Zachary H. Aitken & Subrahmanyam Pattamatta & Zhaoxuan Wu & Zhi Gen Yu & David J. Srolovitz & Peter K. Liaw & Yong-Wei Zhang, 2021. "Simultaneously enhancing the ultimate strength and ductility of high-entropy alloys via short-range ordering," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
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    Cited by:

    1. Mohit Chaudhary & Hans-Christian Weissker, 2024. "Optical spectra of silver clusters and nanoparticles from 4 to 923 atoms from the TDDFT+U method," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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