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Related Concept Videos

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  3. Research Domains
  5. Mathematical Sciences
  7. Mathematical Physics
  9. Mathematical Aspects Of Quantum And Conformal Field Theory, Quantum Gravity And String Theory
  11. Dispersive Surface-response Formalism To Address Nonlocality In Extreme Plasmonic Field Confinement.
  1. Home
  3. Research Domains
  5. Mathematical Sciences
  7. Mathematical Physics
  9. Mathematical Aspects Of Quantum And Conformal Field Theory, Quantum Gravity And String Theory
  11. Dispersive Surface-response Formalism To Address Nonlocality In Extreme Plasmonic Field Confinement.

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Dispersive surface-response formalism to address nonlocality in extreme plasmonic field confinement.

Antton Babaze1,2,3, Tomáš Neuman4, Ruben Esteban1,2

  • 1Materials Physics Center CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018, Donostia-San Sebastián, Spain.

Nanophotonics (Berlin, Germany)
|December 5, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

We introduce a new dispersive surface-response formalism (SRF) that accurately models quantum effects in metallic nanostructures. This improved SRF captures extreme field confinement, advancing semiclassical descriptions of light-matter interactions.

Keywords:
Feibelman parametersnonlocalityplasmonicsquantum surface effects

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Area of Science:

  • Computational physics
  • Materials science
  • Nanophotonics

Background:

  • The surface-response formalism (SRF) incorporates quantum effects into classical electromagnetism using Feibelman parameters.
  • Current SRF methods, limited by long-wavelength approximations, fail to capture nonlocal optical responses crucial for systems with extreme field confinement.

Purpose of the Study:

  • To develop an improved SRF that accounts for the nonlocality of optical responses.
  • To enable accurate modeling of quantum effects in metallic nanostructures with extreme field confinement.

Main Methods:

  • Introduction of a dispersive SRF utilizing a general Feibelman parameter, d⊥(ω, k‖), dependent on excitation frequency (ω) and in-plane wavevector (k‖).
  • Validation against time-dependent density functional theory (TDDFT) calculations.
surface response
time-dependent density functional theory

Main Results:

  • The dispersive SRF accurately describes the plasmonic response of both planar and nonplanar systems exhibiting extreme field confinement.
  • The new formalism overcomes limitations of previous SRF approaches regarding nonlocality.

Conclusions:

  • The dispersive SRF significantly extends the applicability of semiclassical methods for describing light-matter interactions in nanostructures.
  • This advancement facilitates computationally efficient simulations that capture essential quantum effects.