ArticleNature communications2025
Visualizing hot carrier dynamics by nonlinear optical spectroscopy at the atomic length scale.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Visualizing excitonic states in constructed cyclic molecular architectures by tip-enhanced photoluminescence.Nature communications · 2026Article
- Signatures of nonthermal carriers in nonlinear photoluminescence.Nature communications · 2026Review
- Hot Electron-Informed Quantum Plasmonics in Nanoparticle-on-Mirror Nanocavities.Nanophotonics (Berlin, Germany) · 2026Article
- Wave-mixing cathodoluminescence microscopy of low-frequency excitations.Nature communications · 2025Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Probing and manipulating the spatiotemporal dynamics of hot carriers in nanoscale metals is crucial to a plethora of applications ranging from nonlinear nanophotonics to single-molecule photochemistry. The direct investigation of these highly non-equilibrium carriers requires the experimental capability of high energy-resolution (~ meV) broadband femtosecond spectroscopy. When considering the ultimate limits of atomic-scale structures, this capability has remained out of reach until date. Using a two-color femtosecond pump-probe spectroscopy, we present here the real-time tracking of hot carrier dynamics in a well-defined plasmonic picocavity, formed in the tunnel junction of a scanning tunneling microscope (STM). The excitation of hot carriers in the picocavity enables ultrafast all-optical control over the broadband (~ eV) anti-Stokes electronic resonance Raman scattering (ERRS) and the four-wave mixing (FWM) signals generated at the atomic length scale. By mapping the ERRS and FWM signals from a single graphene nanoribbon (GNR), we demonstrate that both signals are more efficiently generated along the edges of the GNR - a manifestation of atomic-scale nonlinear optical microscopy.
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Registered trials
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