Pseudospin-2 in photonic chiral borophene
Pseudospin is an angular momentum degree of freedom introduced in analogy to the real electron spin in the effective massless Dirac-like equation used to describe wave evolution at conical intersections such as the Dirac cones of graphene. Here, we study a photonic implementation of a chiral borophe...
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| FB/Einrichtung: | FB 11: Physik |
| Dokumenttypen: | Artikel |
| Medientypen: | Text |
| Erscheinungsdatum: | 2023 |
| Publikation in MIAMI: | 05.12.2023 |
| Datum der letzten Änderung: | 05.12.2023 |
| Angaben zur Ausgabe: | [Electronic ed.] |
| Quelle: | Photonics Research 11 (2023) 5, 869-877 |
| Fachgebiet (DDC): | 530: Physik |
| Lizenz: | CC BY 4.0 |
| Sprache: | English |
| Förderung: | Finanziert durch den Open-Access-Publikationsfonds der Universität Münster. |
| Format: | PDF-Dokument |
| URN: | urn:nbn:de:hbz:6-18938453651 |
| Weitere Identifikatoren: | DOI: 10.17879/18938454727 |
| Permalink: | https://nbn-resolving.de/urn:nbn:de:hbz:6-18938453651 |
| Verwandte Dokumente: |
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| Onlinezugriff: | 10.1364_PRJ.486916.pdf |
Pseudospin is an angular momentum degree of freedom introduced in analogy to the real electron spin in the effective massless Dirac-like equation used to describe wave evolution at conical intersections such as the Dirac cones of graphene. Here, we study a photonic implementation of a chiral borophene allotrope hosting a pseudospin-2 conical intersection in its energy–momentum spectrum. The presence of this fivefold spectral degeneracy gives rise to quasiparticles with pseudospin up to ±2. We report on conical diffraction and pseudospin–orbit interaction of light in photonic chiral borophene, which, as a result of topological charge conversion, leads to the generation of highly charged optical phase vortices.