Interplay between relaxational atomic fluctuations and charge density waves in La2-xSrxCuO4
(2023) In Physical Review B 108(20).- Abstract
In the cuprate superconductors, the spatial coherence of the charge density wave (CDW) state grows below a temperature TCDW, the origin of which is debated. Using x-ray photon correlation spectroscopy, we have studied the temporal atomic relaxation dynamics in La1.88Sr0.12CuO4 to shed light on this question. Cooling within an emergent structurally distorted phase, which favors the CDW modulation in symmetry and develops in two stages between 180 and 120 K, we observe a crossover from cooperativelike to incoherentlike relaxation dynamics at TCDW=75(10) K. We argue that, if the CDW is hosted by this distortion, the concomitant relaxational crossover and enhancement of CDW spatial coherence supports the interplay between relaxational... (More)
In the cuprate superconductors, the spatial coherence of the charge density wave (CDW) state grows below a temperature TCDW, the origin of which is debated. Using x-ray photon correlation spectroscopy, we have studied the temporal atomic relaxation dynamics in La1.88Sr0.12CuO4 to shed light on this question. Cooling within an emergent structurally distorted phase, which favors the CDW modulation in symmetry and develops in two stages between 180 and 120 K, we observe a crossover from cooperativelike to incoherentlike relaxation dynamics at TCDW=75(10) K. We argue that, if the CDW is hosted by this distortion, the concomitant relaxational crossover and enhancement of CDW spatial coherence supports the interplay between relaxational atomic fluctuations and CDWs in materials of this class on quasistatic times cales.
(Less)
- author
- organization
- publishing date
- 2023-11-15
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B
- volume
- 108
- issue
- 20
- article number
- L201111
- publisher
- American Physical Society
- external identifiers
-
- scopus:85177983625
- ISSN
- 2469-9950
- DOI
- 10.1103/PhysRevB.108.L201111
- language
- English
- LU publication?
- yes
- id
- 1f3ab791-b9f2-4ac9-af91-e85cf5bf0a04
- date added to LUP
- 2024-01-04 17:08:09
- date last changed
- 2024-01-04 17:08:29
@article{1f3ab791-b9f2-4ac9-af91-e85cf5bf0a04, abstract = {{<p>In the cuprate superconductors, the spatial coherence of the charge density wave (CDW) state grows below a temperature TCDW, the origin of which is debated. Using x-ray photon correlation spectroscopy, we have studied the temporal atomic relaxation dynamics in La1.88Sr0.12CuO4 to shed light on this question. Cooling within an emergent structurally distorted phase, which favors the CDW modulation in symmetry and develops in two stages between 180 and 120 K, we observe a crossover from cooperativelike to incoherentlike relaxation dynamics at TCDW=75(10) K. We argue that, if the CDW is hosted by this distortion, the concomitant relaxational crossover and enhancement of CDW spatial coherence supports the interplay between relaxational atomic fluctuations and CDWs in materials of this class on quasistatic times cales.</p>}}, author = {{Shen, L. and Esposito, V. and Burdet, N. G. and Zhu, M. and Petsch, A. N. and Croft, T. P. and Collins, S. P. and Ren, Z. and Westermeier, F. and Sprung, M. and Hayden, S. M. and Turner, J. J. and Blackburn, E.}}, issn = {{2469-9950}}, language = {{eng}}, month = {{11}}, number = {{20}}, publisher = {{American Physical Society}}, series = {{Physical Review B}}, title = {{Interplay between relaxational atomic fluctuations and charge density waves in La2-xSrxCuO4}}, url = {{http://dx.doi.org/10.1103/PhysRevB.108.L201111}}, doi = {{10.1103/PhysRevB.108.L201111}}, volume = {{108}}, year = {{2023}}, }