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Selective excitation and imaging of ultraslow phonon polaritons in thin hexagonal boron nitride crystals
We selectively excite and study two new types of phonon-polariton guided modes that are found in hexagonal boron nitride thin flakes on a gold substrate. Such modes show substantially improved confinement and a group velocity that is hundreds of times slower than the speed of light, thereby providin...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6107022/ https://www.ncbi.nlm.nih.gov/pubmed/30839629 http://dx.doi.org/10.1038/s41377-018-0039-4 |