Journal Article

PUBDB-2026-00280

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Anomalous lattice relaxation dynamics in optimally doped La$_{2−x}$Sr$_x$CuO$_4$

Petsch, A. (Corresponding author)Extern* ; Shen, L. (Corresponding author) ; Porter, Z.Extern*XFEL.EU* ; Alshemi, A.Extern* ; Stellhorn, A.Extern* ; Israelski, A. ; Peng, C.Extern* ; Yavas, H.Extern* ; Thampy, V.Extern*XFEL.EU* ; Arthur, R. J. ; Ren, Z.Extern* ; Westermeier, F.XFEL.EU*DESY* ; Sprung, M.XFEL.EU*DESY* ; Hayden, S. M.Extern* ; Blackburn, E. (Corresponding author)Extern* ; Turner, J. (Corresponding author)Extern*XFEL.EU*

2025
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/9sg4-52qz  doi:10.3204/PUBDB-2026-00280

Abstract: The atomic lattice plays a critical role in the emergence of high-𝑇𝑐 superconductivity in cuprates. While the dynamics associated with electron-lattice coupling typically unfold on picosecond-to-femtosecond timescales, we present an x-ray photon correlation spectroscopy investigation on an optimally doped La-based cuprate that reveals a strong response of kilosecond-scale lattice relaxation dynamics to the superconducting state. Notably, an anomaly emerges around 𝑇𝑐: upon cooling into the superconducting state, the average atomic relaxation lifetime decreases, i.e., dynamics accelerate. This indicates a significant change in the local disorder-induced strain field dynamics at the superconducting transition, highlighting a remarkable coupling between superconductivity and the lattice on quasistatic timescales.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. PETRA-S (FS-PETRA-S)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. FS-Proposal: I-20210586 EC (I-20210586-EC) (I-20210586-EC)

Experiment(s):

1. PETRA Beamline P10 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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