Orbital-selective time-domain signature of nematicity dynamics in the charge-density-wave phase of La1.65Eu0.2Sr0.15CuO4
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
Understanding the interplay between charge, nematic, and structural ordering tendencies in cuprate superconductors is critical to unraveling their complex phase diagram. Using pump-probe time-resolved resonant X-ray scattering on the (0 0 1) Bragg peak at the Cu L3 and O K resonances, we investigate nonequilibrium dynamics of Qa = Qb = 0 nematic order and its association with both charge density wave (CDW) order and lattice dynamics in La1:65Eu0:2Sr0:15CuO4. The orbital selectivity of the resonant X-ray scattering cross-section allows nematicity dynamics associated with the planar O 2p and Cu 3d states to be distinguished from the response of anisotropic lattice distortions.Adirect time-domain comparison ofCDWtranslationalsymmetry breaking and nematic rotational-symmetry breaking reveals that these broken symmetries remain closely linked in the photoexcited state, consistent with the stability of CDW topological defects in the investigated pump fluence regime.
Details
Originalsprache | Englisch |
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Aufsatznummer | e2400727121 |
Fachzeitschrift | Proceedings of the National Academy of Sciences of the United States of America |
Jahrgang | 121 |
Ausgabenummer | 23 |
Publikationsstatus | Veröffentlicht - 4 Juni 2024 |
Peer-Review-Status | Ja |
Externe IDs
PubMed | 38819998 |
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ORCID | /0000-0002-2438-0672/work/161891863 |
Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- charge density wave order, cuprates, nematicity, nonequilibrium electronic dynamics, time-resolved resonant X-ray scattering