Phonon-polaritons in Zn1<b>−</b> <i>x</i>Mg<i>x</i>Te (x≤ 0.09): A Raman scattering study
Phonon-polaritons (PPs) are phonon–photon coupled modes. Using near-forward Raman scattering, the PP of the cubic Zn1−xMgxTe (x≤ 0.09) semiconductor alloy could be measured. While the PP-coupling hardly develops in pure ZnTe, minor Mg-alloying suffices to stabilize a long-lifetime PP strongly bound to the lattice, i.e., with a pronounced phonon character, and yet a fast one originating from the highly dispersive photon-like bottleneck of the PP-dispersion. By combining the advantages of a phonon and a photon, the long-lifetime PP generated by minor Mg-alloying of ZnTe marks an improvement over the PP of pristine ZnTe, which, from the Raman cross section calculation, can only achieve a balanced compromise between the two kinds of advantages, intensity and speed. The discussion of the PP-related lattice dynamics of Zn1−xMgxTe (x≤ 0.09) is grounded in a preliminary study of the lattice macro- and microstructure using x-ray diffraction and solid-state nuclear magnetic resonance, respectively, and further relies on ab initio calculations of the native phonon modes behind the PP in the Mg-dilute limit of Zn1−xMgxTe (x∼ 0), considering various Mg isotopes.
Authors
- V. J. B. Torres (ORCID: https://orcid.org/0000-0003-3795-6818)
- Pascal Franchetti
- Gwendal Kervern (ORCID: https://orcid.org/0000-0001-6168-1805)
- Yann Le Godec (ORCID: https://orcid.org/0000-0002-9221-7076)
- Diksha Singh (ORCID: https://orcid.org/0000-0002-8810-4140)
- A. Polian (ORCID: https://orcid.org/0000-0003-2261-9114)
- O. Pagès (ORCID: https://orcid.org/0000-0002-7674-4204)
- K. Strzałkowski (ORCID: https://orcid.org/0000-0003-3773-0480)
- Sébastien Diliberto (ORCID: https://orcid.org/0000-0002-7766-0205)
- Carole Gardiennet (ORCID: https://orcid.org/0000-0002-4883-7403)
- Ali Abouais (ORCID: https://orcid.org/0000-0003-2366-8743)
- A. Elmahjoubi
- J. P. Itié (ORCID: https://orcid.org/0000-0001-6805-1283)
- Stéphanie Michel (ORCID: https://orcid.org/0000-0003-2382-3141)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Synchrotron soleil (FR)
- Nicolaus Copernicus University (PL)
- Sorbonne Université (FR)
- Institute of Physics (AZ)
- Laboratoire de Cristallographie, Résonance Magnétique et Modélisations (FR)
- Chouaib Doukkali University (MA)
- Institut de minéralogie, de physique des matériaux et de cosmochimie (FR)
- Institut Jean Lamour (FR)
- University of Aveiro (PT)
- Université de Lorraine (FR)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-09-15
- DOI
- https://doi.org/10.1063/5.0271902
- Citations
- 3
- Primary Topic
- Optical properties and cooling technologies in crystalline materials
- Type
- article
- Field-Weighted Citation Impact
- 3.74