Resonant x-ray scattering study of charge-density wave correlations in YBa$_{2}$Cu$_{3}$O$_{6+x}$ under uniaxial stress

S. Nakata; D. Betto; E. Schierle; S. Hameed; Y. Liu; H. -H. Kim; S. M. Souliou; T. Lacmann; K. Fürsich; T. Loew; E. Weschke; A. P. Mackenzie; C. W. Hicks; M. Le Tacon; B. Keimer; M. Minola

doi:10.1103/physrevb.111.115152

arXiv · 2504.12050

Resonant x-ray scattering study of charge-density wave correlations in YBa$_{2}$Cu$_{3}$O$_{6+x}$ under uniaxial stress

S. Nakata·D. Betto·E. Schierle·S. Hameed·Y. Liu·H. -H. Kim·S. M. Souliou·T. Lacmann·K. Fürsich·T. Loew·E. Weschke·A. P. Mackenzie·C. W. Hicks·M. Le Tacon·B. Keimer·M. Minola

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Abstract

We report a comprehensive study of the uniaxial stress response of charge-density-wave (CDW) correlations in detwinned single crystals of the high temperature superconductor YBa$_2$Cu$_3$O$_{6+x}$ (YBCO$_{6+x}$) with $0.40 \leq x \leq 0.93$ (hole-doping levels $0.072 \leq p \leq 0.168$) by means of Cu $L_3$-edge resonant energy-integrated x-ray scattering (REXS). We show that the influence of uniaxial stress is strongly doping dependent: the quasi-two-dimensional CDW is enhanced by in-plane uniaxial stress in a wide hole doping range ($0.45 \leq x \leq 0.80$), but only barely affected in the most underdoped and optimally doped samples ($x = 0.40$ and 0.93), where the CDW correlation length is minimal. A stress-induced three-dimensionally long-range ordered (3D) CDW was observed only in YBCO$_{6.50}$ and YBCO$_{6.67}$. The temperature dependence of the 3D CDW clearly indicates a strong competition with superconductivity. Based on the systematic strain-, doping-, and temperature-dependent REXS measurements reported here, we discuss the relationship between charge order and superconductivity in YBCO$_{6+x}$ and other cuprates.

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S. Nakata, D. Betto, E. Schierle, S. Hameed, Y. Liu, H. -H. Kim, S. M. Souliou, T. Lacmann, K. Fürsich, T. Loew, E. Weschke, A. P. Mackenzie, C. W. Hicks, M. Le Tacon, B. Keimer, M. Minola. 2025-04-16. Resonant x-ray scattering study of charge-density wave correlations in YBa$_{2}$Cu$_{3}$O$_{6+x}$ under uniaxial stress. https://doi.org/10.1103/physrevb.111.115152

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