High-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb alpha-Li2IrO3
The excitations in honeycomb α-Li2IrO3 have been investigated with high-resolution resonant inelastic X-ray scattering (RIXS) at the O K edge. The low-energy response is dominated by a fully resolved ladder of excitations, which we interpret as being due to multiphonon processes in the presence of s...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Physical Society
2019
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| _version_ | 1797051003654111232 |
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| author | Vale, JG Dashwood, CD Paris, E Veiga, LSI Garcia-Fernandez, M Nag, A Walters, A Zhou, K-J Pietsch, I-M Jesche, A Gegenwart, P Coldea, R Schmitt, T McMorrow, DF |
| author_facet | Vale, JG Dashwood, CD Paris, E Veiga, LSI Garcia-Fernandez, M Nag, A Walters, A Zhou, K-J Pietsch, I-M Jesche, A Gegenwart, P Coldea, R Schmitt, T McMorrow, DF |
| author_sort | Vale, JG |
| collection | OXFORD |
| description | The excitations in honeycomb α-Li2IrO3 have been investigated with high-resolution resonant inelastic X-ray scattering (RIXS) at the O K edge. The low-energy response is dominated by a fully resolved ladder of excitations, which we interpret as being due to multiphonon processes in the presence of strong electron-phonon coupling (EPC). At higher energies, the orbital excitations are shown to be dressed by phonons. The high quality of the data permits a quantitative test of the analytical model for the RIXS cross section, which has been proposed to describe EPC in transition-metal oxides (TMOs). We find that the magnitude of the EPC is comparable to that found for a range of 3d TMOs. This indicates that EPC may be of equal importance in determining the phenomenology displayed by corresponding 5d-based systems. |
| first_indexed | 2024-03-06T18:13:36Z |
| format | Journal article |
| id | oxford-uuid:03dbb16e-9ff8-4eee-9588-40c1897eb96a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:13:36Z |
| publishDate | 2019 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:03dbb16e-9ff8-4eee-9588-40c1897eb96a2022-03-26T08:48:37ZHigh-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb alpha-Li2IrO3Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:03dbb16e-9ff8-4eee-9588-40c1897eb96aEnglishSymplectic ElementsAmerican Physical Society2019Vale, JGDashwood, CDParis, EVeiga, LSIGarcia-Fernandez, MNag, AWalters, AZhou, K-JPietsch, I-MJesche, AGegenwart, PColdea, RSchmitt, TMcMorrow, DFThe excitations in honeycomb α-Li2IrO3 have been investigated with high-resolution resonant inelastic X-ray scattering (RIXS) at the O K edge. The low-energy response is dominated by a fully resolved ladder of excitations, which we interpret as being due to multiphonon processes in the presence of strong electron-phonon coupling (EPC). At higher energies, the orbital excitations are shown to be dressed by phonons. The high quality of the data permits a quantitative test of the analytical model for the RIXS cross section, which has been proposed to describe EPC in transition-metal oxides (TMOs). We find that the magnitude of the EPC is comparable to that found for a range of 3d TMOs. This indicates that EPC may be of equal importance in determining the phenomenology displayed by corresponding 5d-based systems. |
| spellingShingle | Vale, JG Dashwood, CD Paris, E Veiga, LSI Garcia-Fernandez, M Nag, A Walters, A Zhou, K-J Pietsch, I-M Jesche, A Gegenwart, P Coldea, R Schmitt, T McMorrow, DF High-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb alpha-Li2IrO3 |
| title | High-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb alpha-Li2IrO3 |
| title_full | High-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb alpha-Li2IrO3 |
| title_fullStr | High-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb alpha-Li2IrO3 |
| title_full_unstemmed | High-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb alpha-Li2IrO3 |
| title_short | High-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb alpha-Li2IrO3 |
| title_sort | high resolution resonant inelastic x ray scattering study of the electron phonon coupling in honeycomb alpha li2iro3 |
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