TY - JOUR
T1 - Parallel spin stripes and their coexistence with superconducting ground states at optimal and high doping in La1.6-xNd0.4SrxCuO4
AU - Ma, Qianli
AU - Rule, Kirrily C.
AU - Cronkwright, Zachary W.
AU - Dragomir, Mirela
AU - Mitchell, Gabrielle
AU - Smith, Evan M.
AU - Chi, Songxue
AU - Kolesnikov, Alexander I.
AU - Stone, Matthew B.
AU - Gaulin, Bruce D.
N1 - Publisher Copyright:
© 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2021/6
Y1 - 2021/6
N2 - Three-dimensional, commensurate long-range magnetic order in La2CuO4 quickly evolves to quasi-two-dimensional, incommensurate correlations upon doping with mobile holes, and superconductivity follows for x as small as 0.05 in the La2-xSrx/BaxCuO4 family of superconductors. The onset of superconductivity in these systems is known to be coincident with a remarkable rotation of the incommensurate spin order from "diagonal stripes"below x = 0.05 to "parallel stripes"above. However, little is known about the spin correlations at optimal and high doping levels, around and beyond the proposed quantum critical point for the pseudogap phase, p∗. Here, we present elastic and inelastic neutron scattering measurements on single crystals of La1.6-xNd0.4SrxCuO4 with x = 0.125, 0.19, 0.24, and 0.26 and show that two-dimensional, quasistatic, parallel spin stripes have an onset at temperatures such that the parallel spin stripe phase extends beyond p∗ and envelops the entirety of superconducting ground states in this system. We also show that the elastic order parameter for parallel spin stripes at optimum doping, x = 0.19, displays an inflection point at superconducting Tc, while the low-energy dynamic spectral weight of parallel stripe fluctuations grows with decreasing temperature and saturates below Tc.
AB - Three-dimensional, commensurate long-range magnetic order in La2CuO4 quickly evolves to quasi-two-dimensional, incommensurate correlations upon doping with mobile holes, and superconductivity follows for x as small as 0.05 in the La2-xSrx/BaxCuO4 family of superconductors. The onset of superconductivity in these systems is known to be coincident with a remarkable rotation of the incommensurate spin order from "diagonal stripes"below x = 0.05 to "parallel stripes"above. However, little is known about the spin correlations at optimal and high doping levels, around and beyond the proposed quantum critical point for the pseudogap phase, p∗. Here, we present elastic and inelastic neutron scattering measurements on single crystals of La1.6-xNd0.4SrxCuO4 with x = 0.125, 0.19, 0.24, and 0.26 and show that two-dimensional, quasistatic, parallel spin stripes have an onset at temperatures such that the parallel spin stripe phase extends beyond p∗ and envelops the entirety of superconducting ground states in this system. We also show that the elastic order parameter for parallel spin stripes at optimum doping, x = 0.19, displays an inflection point at superconducting Tc, while the low-energy dynamic spectral weight of parallel stripe fluctuations grows with decreasing temperature and saturates below Tc.
UR - http://www.scopus.com/inward/record.url?scp=85111185624&partnerID=8YFLogxK
U2 - 10.1103/PhysRevResearch.3.023151
DO - 10.1103/PhysRevResearch.3.023151
M3 - Article
AN - SCOPUS:85111185624
SN - 2643-1564
VL - 3
JO - Physical Review Research
JF - Physical Review Research
IS - 2
M1 - 023151
ER -