Engineering phonon polaritons in van der Waals heterostructures to enhance in-plane optical anisotropy.
Journal
Science advances
ISSN: 2375-2548
Titre abrégé: Sci Adv
Pays: United States
ID NLM: 101653440
Informations de publication
Date de publication:
Apr 2019
Apr 2019
Historique:
received:
09
07
2018
accepted:
14
02
2019
entrez:
18
4
2019
pubmed:
18
4
2019
medline:
18
4
2019
Statut:
epublish
Résumé
Van der Waals (vdW) heterostructures assembled from layers of two-dimensional materials have attracted considerable interest due to their novel optical and electrical properties. Here, we report a scattering-type scanning near-field optical microscopy study of hexagonal boron nitride on black phosphorus (h-BN/BP) heterostructures, demonstrating the first direct observation of in-plane anisotropic phonon polariton modes in vdW heterostructures. Notably, the measured in-plane optical anisotropy along the armchair and zigzag crystal axes exceeds the ratio of refractive indices of BP in the
Identifiants
pubmed: 30993198
doi: 10.1126/sciadv.aau7171
pii: aau7171
pmc: PMC6461454
doi:
Types de publication
Journal Article
Langues
eng
Pagination
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