In this work, we report muon spin rotation and magnetic susceptibility experiments on in-plane stress effects on the static spin-stripe order and superconductivity in the cuprate system La2-xBaxCuO4 with x = 0.115. An extremely low uniaxial stress of ~0.1 GPa induces a substantial decrease in the magnetic volume fraction and a dramatic rise in the onset of 3D superconductivity, from ~10 to 32 K; however,the onset of at-least-2D superconductivity is much less sensitive to stress. These results show not only that large-volume-fraction spin-stripe order is anti-correlated with 3D superconducting (SC) coherence, but also that these states are energetically very finely balanced. Moreover, the onset temperatures of 3D superconductivity and spin-stripe order are very similar in the large stress regime. Furthermore, these results strongly suggest a similar pairing mechanism for spin-stripe order, the spatially-modulated 2D and uniform 3D SC orders, imposing an important constraint on theoretical models.
Guguchia, Z and Tranquada, John M.. "Using uniaxial stress to probe the relationship between competing superconducting states in a cuprate with spin-stripe order." Physical Review Letters, vol. 125, no. 9, Aug. 2020. https://doi.org/10.1103/PhysRevLett.125.097005
Guguchia, Z, & Tranquada, John M. (2020). Using uniaxial stress to probe the relationship between competing superconducting states in a cuprate with spin-stripe order. Physical Review Letters, 125(9). https://doi.org/10.1103/PhysRevLett.125.097005
Guguchia, Z, and Tranquada, John M., "Using uniaxial stress to probe the relationship between competing superconducting states in a cuprate with spin-stripe order," Physical Review Letters 125, no. 9 (2020), https://doi.org/10.1103/PhysRevLett.125.097005
@article{osti_1647002,
author = {Guguchia, Z and Tranquada, John M.},
title = {Using uniaxial stress to probe the relationship between competing superconducting states in a cuprate with spin-stripe order},
annote = {In this work, we report muon spin rotation and magnetic susceptibility experiments on in-plane stress effects on the static spin-stripe order and superconductivity in the cuprate system La2-xBaxCuO4 with x = 0.115. An extremely low uniaxial stress of ~0.1 GPa induces a substantial decrease in the magnetic volume fraction and a dramatic rise in the onset of 3D superconductivity, from ~10 to 32 K; however,the onset of at-least-2D superconductivity is much less sensitive to stress. These results show not only that large-volume-fraction spin-stripe order is anti-correlated with 3D superconducting (SC) coherence, but also that these states are energetically very finely balanced. Moreover, the onset temperatures of 3D superconductivity and spin-stripe order are very similar in the large stress regime. Furthermore, these results strongly suggest a similar pairing mechanism for spin-stripe order, the spatially-modulated 2D and uniform 3D SC orders, imposing an important constraint on theoretical models.},
doi = {10.1103/PhysRevLett.125.097005},
url = {https://www.osti.gov/biblio/1647002},
journal = {Physical Review Letters},
issn = {ISSN 0031-9007},
number = {9},
volume = {125},
place = {United States},
publisher = {American Physical Society (APS)},
year = {2020},
month = {08}}