| Autor: |
K. von Arx, Qisi Wang, S. Mustafi, D. G. Mazzone, M. Horio, D. John Mukkattukavil, E. Pomjakushina, S. Pyon, T. Takayama, H. Takagi, T. Kurosawa, N. Momono, M. Oda, N. B. Brookes, D. Betto, W. Zhang, T. C. Asmara, Y. Tseng, T. Schmitt, Y. Sassa, J. Chang |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
npj Quantum Materials, Vol 8, Iss 1, Pp 1-6 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2397-4648 |
| DOI: |
10.1038/s41535-023-00539-w |
| Popis: |
Abstract In high-temperature cuprate superconductors, stripe order refers broadly to a coupled spin and charge modulation with a commensuration of eight and four lattice units, respectively. How this stripe order evolves across optimal doping remains a controversial question. Here we present a systematic resonant inelastic x-ray scattering study of weak charge correlations in La2−x Sr x CuO4 and La1.8−x Eu0.2Sr x CuO4. Ultra high energy resolution experiments demonstrate the importance of the separation of inelastic and elastic scattering processes. Long-range temperature-dependent stripe order is only found below optimal doping. At higher doping, short-range temperature-independent correlations are present up to the highest doping measured. This transformation is distinct from and preempts the pseudogap critical doping. We argue that the doping and temperature-independent short-range correlations originate from unresolved electron–phonon coupling that broadly peaks at the stripe ordering vector. In La2−x Sr x CuO4, long-range static stripe order vanishes around optimal doping and we discuss both quantum critical and crossover scenarios. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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