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Title: Parallel spin stripes and their coexistence with superconducting ground states at optimal and high doping in La 1.6 x Nd 0.4 Sr x CuO 4

Abstract

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.

Authors:
ORCiD logo; ORCiD logo; ; ORCiD logo; ; ORCiD logo; ; ORCiD logo; ORCiD logo;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1785038
Alternate Identifier(s):
OSTI ID: 1856684
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Published Article
Journal Name:
Physical Review Research
Additional Journal Information:
Journal Name: Physical Review Research Journal Volume: 3 Journal Issue: 2; Journal ID: ISSN 2643-1564
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; superconductivity; cuprates; high-temperature superconductors; neutron scattering

Citation Formats

Ma, Qianli, Rule, Kirrily C., Cronkwright, Zachary W., Dragomir, Mirela, Mitchell, Gabrielle, Smith, Evan M., Chi, Songxue, Kolesnikov, Alexander I., Stone, Matthew B., and Gaulin, Bruce D. Parallel spin stripes and their coexistence with superconducting ground states at optimal and high doping in La 1.6 − x Nd 0.4 Sr x CuO 4. United States: N. p., 2021. Web. doi:10.1103/PhysRevResearch.3.023151.
Ma, Qianli, Rule, Kirrily C., Cronkwright, Zachary W., Dragomir, Mirela, Mitchell, Gabrielle, Smith, Evan M., Chi, Songxue, Kolesnikov, Alexander I., Stone, Matthew B., & Gaulin, Bruce D. Parallel spin stripes and their coexistence with superconducting ground states at optimal and high doping in La 1.6 − x Nd 0.4 Sr x CuO 4. United States. https://doi.org/10.1103/PhysRevResearch.3.023151
Ma, Qianli, Rule, Kirrily C., Cronkwright, Zachary W., Dragomir, Mirela, Mitchell, Gabrielle, Smith, Evan M., Chi, Songxue, Kolesnikov, Alexander I., Stone, Matthew B., and Gaulin, Bruce D. Thu . "Parallel spin stripes and their coexistence with superconducting ground states at optimal and high doping in La 1.6 − x Nd 0.4 Sr x CuO 4". United States. https://doi.org/10.1103/PhysRevResearch.3.023151.
@article{osti_1785038,
title = {Parallel spin stripes and their coexistence with superconducting ground states at optimal and high doping in La 1.6 − x Nd 0.4 Sr x CuO 4},
author = {Ma, Qianli and Rule, Kirrily C. and Cronkwright, Zachary W. and Dragomir, Mirela and Mitchell, Gabrielle and Smith, Evan M. and Chi, Songxue and Kolesnikov, Alexander I. and Stone, Matthew B. and Gaulin, Bruce D.},
abstractNote = {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.},
doi = {10.1103/PhysRevResearch.3.023151},
journal = {Physical Review Research},
number = 2,
volume = 3,
place = {United States},
year = {Thu May 27 00:00:00 EDT 2021},
month = {Thu May 27 00:00:00 EDT 2021}
}

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