Phonon spectroscopy at atomic resolution
Advances in source monochromation in transmission electron microscopy have opened up new possibilities for investigations of condensed matter using the phonon-loss sector of the energy-loss spectrum. Here, we explore the spatial variations of the spectrum as an atomic-sized probe is scanned across a...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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American Physical Society
2019
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| _version_ | 1826283602545999872 |
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| author | Hage, F Kepaptsoglou, D Ramasse, Q Allen, L |
| author_facet | Hage, F Kepaptsoglou, D Ramasse, Q Allen, L |
| author_sort | Hage, F |
| collection | OXFORD |
| description | Advances in source monochromation in transmission electron microscopy have opened up new possibilities for investigations of condensed matter using the phonon-loss sector of the energy-loss spectrum. Here, we explore the spatial variations of the spectrum as an atomic-sized probe is scanned across a thin flake of hexagonal boron nitride. We demonstrate that phonon spectral mapping of atomic structure is possible. These results are consistent with a model for the quantum excitation of phonons and confirm that Z-contrast imaging is based on inelastic scattering associated with phonon excitation. |
| first_indexed | 2024-03-07T01:01:20Z |
| format | Journal article |
| id | oxford-uuid:89d6eb67-3bbe-47bf-85bd-e5d5eac46c67 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:01:20Z |
| publishDate | 2019 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:89d6eb67-3bbe-47bf-85bd-e5d5eac46c672022-03-26T22:27:22ZPhonon spectroscopy at atomic resolutionJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:89d6eb67-3bbe-47bf-85bd-e5d5eac46c67EnglishSymplectic Elements at OxfordAmerican Physical Society2019Hage, FKepaptsoglou, DRamasse, QAllen, LAdvances in source monochromation in transmission electron microscopy have opened up new possibilities for investigations of condensed matter using the phonon-loss sector of the energy-loss spectrum. Here, we explore the spatial variations of the spectrum as an atomic-sized probe is scanned across a thin flake of hexagonal boron nitride. We demonstrate that phonon spectral mapping of atomic structure is possible. These results are consistent with a model for the quantum excitation of phonons and confirm that Z-contrast imaging is based on inelastic scattering associated with phonon excitation. |
| spellingShingle | Hage, F Kepaptsoglou, D Ramasse, Q Allen, L Phonon spectroscopy at atomic resolution |
| title | Phonon spectroscopy at atomic resolution |
| title_full | Phonon spectroscopy at atomic resolution |
| title_fullStr | Phonon spectroscopy at atomic resolution |
| title_full_unstemmed | Phonon spectroscopy at atomic resolution |
| title_short | Phonon spectroscopy at atomic resolution |
| title_sort | phonon spectroscopy at atomic resolution |
| work_keys_str_mv | AT hagef phononspectroscopyatatomicresolution AT kepaptsogloud phononspectroscopyatatomicresolution AT ramasseq phononspectroscopyatatomicresolution AT allenl phononspectroscopyatatomicresolution |