Detail publikace

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

GALLINA, P. KONEČNÁ, A. LIŠKA, J. IDROBO, J. ŠIKOLA, T.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

HYBRIDIZATION; MODES; RESONANCES; ANTENNAS

Autoři

GALLINA, P.; KONEČNÁ, A.; LIŠKA, J.; IDROBO, J.; ŠIKOLA, T.

Vydáno

15. 2. 2023

Nakladatel

AMER PHYSICAL SOC

Místo

COLLEGE PK

ISSN

2331-7019

Periodikum

Physical Review Applied

Ročník

19

Číslo

2

Stát

Spojené státy americké

Strany od

024042

Strany do

24052

Strany počet

11

URL

https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.19.024042

BibTex

@article{BUT183427,
  author="Pavel {Gallina} and Andrea {Konečná} and Jiří {Liška} and Juan Carlos {Idrobo} and Tomáš {Šikola}",
  title="Strongly Coupled Plasmon and Phonon Polaritons as Seen by Photon and Electron Probes",
  journal="Physical Review Applied",
  year="2023",
  volume="19",
  number="2",
  pages="11",
  doi="10.1103/PhysRevApplied.19.024042",
  issn="2331-7019",
  url="https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.19.024042"
}