Strongly Coupled Plasmon and Phonon Polaritons as Seen by Photon and Electron Probes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F23%3APU148097" target="_blank" >RIV/00216305:26620/23:PU148097 - isvavai.cz</a>

Result on the web

<a href="https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.19.024042" target="_blank" >https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.19.024042</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevApplied.19.024042" target="_blank" >10.1103/PhysRevApplied.19.024042</a>

Result language

angličtina

Original language name

Strongly Coupled Plasmon and Phonon Polaritons as Seen by Photon and Electron Probes

Original language description

The ability to control and modify infrared excitations in condensed matter is of both fundamental and applied interest. Here we explore a system supporting low-energy excitations, in particular, mid-infrared localized plasmon modes and phonon polaritons that are tuned to be strongly coupled. We study the cou-pled modes by using far-field infrared spectroscopy, state-of-the-art monochromated electron energy-loss spectroscopy, numerical simulations, and analytical modeling. We demonstrate that the electron probe facilitates a precise characterization of polaritons constituting the coupled system, and enables an active control over the coupling and the resulting sample response both in frequency and space. Although far -field optical spectra can be substantially different from near-field electron energy-loss spectra, we show that a direct comparison is possible via postprocessing and right positioning of the electron beam. The resulting spectra allow us to evaluate the key parameters of the coupled system, such as the coupling strength, which we demonstrate to be probe independent. Our work establishes a rigorous description of the spectral features observed in light-and localized electron-based spectroscopies, which can be extended to the analysis of analogous optical systems with applications in heat management and electromagnetic field concentration or nanofocusing.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review Applied

ISSN

2331-7019

e-ISSN

—

Volume of the periodical

19

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

„024042“-„“

UT code for WoS article

000936528900002

EID of the result in the Scopus database

2-s2.0-85148331428