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Title: Spin Stripe Order in a Square Planar Trilayer Nickelate.

Abstract

Trilayer nickelates, which exhibit a high degree of orbital polarization combined with an electron count (d(8.67)) corresponding to overdoped cuprates, have been identified as a promising candidate platform for achieving high-T-c superconductivity. One such material, La4Ni3O8, undergoes a semiconductor-insulator transition at similar to 105 K, which was recently shown to arise from the formation of charge stripes. However, an outstanding issue has been the origin of an anomaly in the magnetic susceptibility at the transition and whether it signifies the formation of spin stripes akin to single layer nickelates. Here we report single crystal neutron diffraction measurements (both polarized and unpolarized) that establish that the ground state is indeed magnetic. The ordering is modeled as antiferromagnetic spin stripes that are commensurate with the charge stripes, the magnetic ordering occurring in individual trilayers that are essentially uncorrelated along the crystallographic c axis. A comparison of the charge and spin stripe order parameters reveals that, in contrast to single-layer nickelates such as La2-xSrxNiO4 as well as related quasi-2D oxides including manganites, cobaltates, and cuprates, these orders uniquely appear simultaneously, thus demonstrating a stronger coupling between spin and charge than in these related low-dimensional correlated oxides.

Authors:
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Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; USDOE Office of Science - Office of Basic Energy Sciences - Scientific User Facilities Division; National Science Foundation (NSF); National Institute of Standards and Technology (NIST)
OSTI Identifier:
1532474
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 122; Journal Issue: 24
Country of Publication:
United States
Language:
English

Citation Formats

Zhang, Junjie, Pajerowski, D. M., Botana, A. S., Zheng, Hong, Harriger, L., Rodriguez-Rivera, J., Ruff, J. P. C., Schreiber, N. J., Wang, B., Chen, Yu-Sheng, Chen, W. C., Norman, M. R., Rosenkranz, S., Mitchell, J. F., and Phelan, D. Spin Stripe Order in a Square Planar Trilayer Nickelate.. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.122.247201.
Zhang, Junjie, Pajerowski, D. M., Botana, A. S., Zheng, Hong, Harriger, L., Rodriguez-Rivera, J., Ruff, J. P. C., Schreiber, N. J., Wang, B., Chen, Yu-Sheng, Chen, W. C., Norman, M. R., Rosenkranz, S., Mitchell, J. F., & Phelan, D. Spin Stripe Order in a Square Planar Trilayer Nickelate.. United States. doi:10.1103/PhysRevLett.122.247201.
Zhang, Junjie, Pajerowski, D. M., Botana, A. S., Zheng, Hong, Harriger, L., Rodriguez-Rivera, J., Ruff, J. P. C., Schreiber, N. J., Wang, B., Chen, Yu-Sheng, Chen, W. C., Norman, M. R., Rosenkranz, S., Mitchell, J. F., and Phelan, D. Tue . "Spin Stripe Order in a Square Planar Trilayer Nickelate.". United States. doi:10.1103/PhysRevLett.122.247201.
@article{osti_1532474,
title = {Spin Stripe Order in a Square Planar Trilayer Nickelate.},
author = {Zhang, Junjie and Pajerowski, D. M. and Botana, A. S. and Zheng, Hong and Harriger, L. and Rodriguez-Rivera, J. and Ruff, J. P. C. and Schreiber, N. J. and Wang, B. and Chen, Yu-Sheng and Chen, W. C. and Norman, M. R. and Rosenkranz, S. and Mitchell, J. F. and Phelan, D.},
abstractNote = {Trilayer nickelates, which exhibit a high degree of orbital polarization combined with an electron count (d(8.67)) corresponding to overdoped cuprates, have been identified as a promising candidate platform for achieving high-T-c superconductivity. One such material, La4Ni3O8, undergoes a semiconductor-insulator transition at similar to 105 K, which was recently shown to arise from the formation of charge stripes. However, an outstanding issue has been the origin of an anomaly in the magnetic susceptibility at the transition and whether it signifies the formation of spin stripes akin to single layer nickelates. Here we report single crystal neutron diffraction measurements (both polarized and unpolarized) that establish that the ground state is indeed magnetic. The ordering is modeled as antiferromagnetic spin stripes that are commensurate with the charge stripes, the magnetic ordering occurring in individual trilayers that are essentially uncorrelated along the crystallographic c axis. A comparison of the charge and spin stripe order parameters reveals that, in contrast to single-layer nickelates such as La2-xSrxNiO4 as well as related quasi-2D oxides including manganites, cobaltates, and cuprates, these orders uniquely appear simultaneously, thus demonstrating a stronger coupling between spin and charge than in these related low-dimensional correlated oxides.},
doi = {10.1103/PhysRevLett.122.247201},
journal = {Physical Review Letters},
number = 24,
volume = 122,
place = {United States},
year = {2019},
month = {6}
}