Probing low-energy hyperbolic polaritons in van der Waals crystals with an electron microscope
Here the authors adapt a STEM-EELS system to probe energy loss down to 100 meV, and apply it to map phononic states in hexagonal boron nitride, revealing that the electron loss is dominated by hyperbolic phonon polaritons.
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Publishing Group
2017-07-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-017-00056-y |