Phonon Anomalies in Charge-Density-Wave Ordered La2-xSrxCuO4
It has been known for some time that the CuO bond-stretching phonon in the high-temperature superconductor La2-xSrxCuO4 (LSCO) exhibits anomalies is its dispersion and damping. A recent resonant inelastic x-ray scattering (RIXS) experiment on charge density wave (CDW) ordered LSCO (x=1/8) has shown that the same phonon exhibits a strong RIXS signal for a range of wavevectors greater than the CDW ordering wavevector qCDW. This result indicates anomalously strong electron-phonon coupling and the presence strong charge density wave excitations. Here we propose to measure dispersion and damping of the phonon for the LSCO composition studied by RIXS.
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| Provenance | |
|---|---|
| Creator | Dr Helen Walker; Dr Russell Ewings; Professor Stephen Hayden; Miss Maud Barthélemy; Dr Mengze Zhu |
| Publisher | ISIS Neutron and Muon Source |
| Publication Year | 2021 |
| Rights | CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/ |
| OpenAccess | true |
| Contact | isisdata(at)stfc.ac.uk |
| Representation | |
|---|---|
| Resource Type | Dataset |
| Discipline | Photon- and Neutron Geosciences |
| Temporal Coverage Begin | 2018-10-15T08:00:00Z |
| Temporal Coverage End | 2018-10-21T08:28:55Z |