Quantum Surface-Response of Metals Revealed by Acoustic Graphene Plasmons
arXiv:2008.07613 · doi:10.1038/s41467-021-23061-8
Abstract
A quantitative understanding of the electromagnetic response of materials is essential for the precise engineering of maximal, versatile, and controllable light--matter interactions. Material surfaces, in particular, are prominent platforms for enhancing electromagnetic interactions and for tailoring chemical processes. However, at the deep nanoscale, the electromagnetic response of electron systems is significantly impacted by quantum surface-response at material interfaces, which is challenging to probe using standard optical techniques. Here, we show how ultra-confined acoustic graphene plasmons (AGPs) in graphene--dielectric--metal structures can be used to probe the quantum surface-response functions of nearby metals, here encoded through the so-called Feibelman -parameters. Based on our theoretical formalism, we introduce a concrete proposal for experimentally inferring the low-frequency quantum response of metals from quantum shifts of the AGPs' dispersion, and demonstrate that the high field confinement of AGPs can resolve intrinsically quantum mechanical electronic length-scales with subnanometer resolution. Our findings reveal a promising scheme to probe the quantum response of metals, and further suggest the utilization of AGPs as plasmon rulers with ångström-scale accuracy.
arXiv comment7 pages, 4 figures
References in corpus (21)
- Graphene plasmonics: A platform for strong light-matter interaction
- Plasmonics in graphene at infra-red frequencies
- Dielectric function, screening, and plasmons in 2D graphene
- Polaritons in layered 2D materials
- Graphene Plasmonics: Challenges and Opportunities
- Dynamical polarization of graphene at finite doping
- Highly confined low-loss plasmons in graphene-boron nitride heterostructures
- Nonlocal optical response in metallic nanostructures
- Probing the Ultimate Plasmon Confinement Limits with a Van der Waals heterostructure
- Tuning quantum non-local effects in graphene plasmonics
- Ultra-confined acoustic THz graphene plasmons revealed by photocurrent nanoscopy
- An Introduction to Graphene Plasmonics
- Far-field Excitation of Single Graphene Plasmon Cavities with Ultra-compressed Mode-volumes
- A General Theoretical and Experimental Framework for Nanoscale Electromagnetism
- Plasmon-Emitter Interactions at the Nanoscale
- Quantum corrections in nanoplasmonics: shape, scale, and material
- Projected-Dipole Model for Quantum Plasmonics
- Nonlocal response in thin-film waveguides: loss versus nonlocality and breaking of complementarity
- Probing Nonlocal Effects in Metals with Graphene Plasmons
- Optical response of noble metal nanostructures: Quantum surface effects in crystallographic facets
- Harnessing Ultraconfined Graphene Plasmons to Probe the Electrodynamics of Superconductors
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- Plasmons in the van der Waals charge-density-wave material 2H-TaSe2
- Surface-response functions obtained from equilibrium electron-density profiles
- Harnessing Ultraconfined Graphene Plasmons to Probe the Electrodynamics of Superconductors
- In-plane Exciton Polaritons vs Plasmon Polaritons: Nonlocal corrections, confinement and loss
- Quasinormal mode theory for nanoscale electromagnetism with quantum surface responses
- Giant terahertz pulling force within an evanescent field propelled by wave coupling into radiation and bound modes
- Plasmonic polarization sensing of electrostatic superlattice potentials
- Tailoring Near-Field-Mediated Photon Electron Interactions with Light Polarization
- Toward Monoatomic-Layer Field Confinement Limit via Acoustic Graphene Plasmons
- Prospects to bypass nonlocal phenomena in metals using phonon-polaritons
- Plasmonics response of a nanorod in the vicinity of a metallic surface: local approach with analytical solution
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