Interplay between relaxational atomic fluctuations and charge density waves in La2−𝑥⁢Sr𝑥⁢CuO4

L. Shen; V. Esposito; N. G. Burdet; M. Zhu; A. N. Petsch; T. P. Croft; S. P. Collins; Z. Ren; F. Westermeier; M. Sprung; S. M. Hayden; J. J. Turner; E. Blackburn

doi:https://arxiv.org/abs/2304.12485

Interplay between relaxational atomic fluctuations and charge density waves in La_2−𝑥⁢Sr_𝑥⁢CuO₄

L. Shen^*
, V. Esposito
, N. G. Burdet
, M. Zhu
, A. N. Petsch
, T. P. Croft
, S. P. Collins
, Z. Ren
, F. Westermeier
, M. Sprung
, S. M. Hayden^*
, J. J. Turner^*
, E. Blackburn^*

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Abstract

In the cuprate superconductors, the spatial coherence of the charge density wave (CDW) state grows below a temperature 𝑇_CDW, the origin of which is debated. Using x-ray photon correlation spectroscopy, we have studied the temporal atomic relaxation dynamics in La_1.88⁢Sr_0.12⁢CuO₄ 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 𝑇_CDW=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.

Original language	English
Article number	L201111
Number of pages	6
Journal	Physical Review B
Volume	108
Issue number	20
Early online date	13 Nov 2023
DOIs	https://doi.org/https://arxiv.org/abs/2304.12485 https://doi.org/10.1103/PhysRevB.108.L201111
Publication status	Published - 15 Nov 2023

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Shen, L., Esposito, V., Burdet, N. G., Zhu, M., Petsch, A. N., Croft, T. P., Collins, S. P., Ren, Z., Westermeier, F., Sprung, M., Hayden, S. M., Turner, J. J., & Blackburn, E. (2023). Interplay between relaxational atomic fluctuations and charge density waves in La_2−𝑥⁢Sr_𝑥⁢CuO₄. Physical Review B, 108(20), Article L201111. https://doi.org/https://arxiv.org/abs/2304.12485, https://doi.org/10.1103/PhysRevB.108.L201111

@article{39b8857186994fc19226901b2b5f69cf,

title = "Interplay between relaxational atomic fluctuations and charge density waves in La2−𝑥⁢Sr𝑥⁢CuO4",

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 La1.88⁢Sr0.12⁢CuO4 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.",

author = "L. Shen and V. Esposito and Burdet, \{N. G.\} and M. Zhu and Petsch, \{A. N.\} and Croft, \{T. P.\} and Collins, \{S. P.\} and Z. Ren and F. Westermeier and M. Sprung and Hayden, \{S. M.\} and Turner, \{J. J.\} and E. Blackburn",

year = "2023",

month = nov,

day = "15",

doi = "https://arxiv.org/abs/2304.12485",

language = "English",

volume = "108",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society (APS)",

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Shen, L, Esposito, V, Burdet, NG, Zhu, M, Petsch, AN, Croft, TP, Collins, SP, Ren, Z, Westermeier, F, Sprung, M, Hayden, SM, Turner, JJ & Blackburn, E 2023, 'Interplay between relaxational atomic fluctuations and charge density waves in La_2−𝑥⁢Sr_𝑥⁢CuO₄', Physical Review B, vol. 108, no. 20, L201111. https://doi.org/https://arxiv.org/abs/2304.12485, https://doi.org/10.1103/PhysRevB.108.L201111

TY - JOUR

T1 - Interplay between relaxational atomic fluctuations and charge density waves in La2−𝑥⁢Sr𝑥⁢CuO4

AU - Shen, L.

AU - Esposito, V.

AU - Burdet, N. G.

AU - Zhu, M.

AU - Petsch, A. N.

AU - Croft, T. P.

AU - Collins, S. P.

AU - Ren, Z.

AU - Westermeier, F.

AU - Sprung, M.

AU - Hayden, S. M.

AU - Turner, J. J.

AU - Blackburn, E.

PY - 2023/11/15

Y1 - 2023/11/15

N2 - 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 La1.88⁢Sr0.12⁢CuO4 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.

AB - 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 La1.88⁢Sr0.12⁢CuO4 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.

U2 - https://arxiv.org/abs/2304.12485

DO - https://arxiv.org/abs/2304.12485

M3 - Article (Academic Journal)

SN - 2469-9950

VL - 108

JO - Physical Review B

JF - Physical Review B

IS - 20

M1 - L201111

ER -