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Title: Emergent c-axis magnetic helix in manganite-nickelate superlattices

Abstract

Here, the nature of the magnetic order in (La 2/3Sr 1/3MnO 3) 9/(LaNiO 3) 3 superlattices is investigated using x-ray resonant magnetic reflectometry. We observe a new -axis magnetic helix state in the (LaNiO 3) 3 layers that had never been measured in nickelates, and which mediates the ~130° magnetic coupling between the ferromagnetic (La 2/3Sr 1/3MnO 3) 9 layers, illustrating the power of x-rays for discovering the magnetic state of complex oxide interfaces. Resonant inelastic x-ray scattering and x-ray absorption spectroscopy show that Ni-O ligand hole states from bulk LaNiO 3 are mostly filled due to interfacial electron transfer from Mn, driving the Ni orbitals closer to an atomic-like 3d 8 configuration. We discuss the constraints imposed by this electronic configuration to the microscopic origin of the observed magnetic structure. The presence of a magnetic helix in (La 2/3Sr 1/3MnO 3) 9/(LaNiO 3) 3 is crucial for modeling the potential spintronic functionality of this system and may be important for designing emergent magnetism in novel devices in general.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3];  [2];  [4];  [5];  [6];  [7];  [8]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Synchrotron SOLEIL, Gif-sur-Yvette (France)
  4. Sorbonne Univ., Paris Cedex (France); Chinese Academy of Sciences, Ningbo (China)
  5. Argonne National Lab. (ANL), Argonne, IL (United States); Harvard Univ., Cambridge, MA (United States)
  6. Canadian Light Source, Saskatoon, SK (Canada)
  7. Sorbonne Univ., Paris Cedex (France); Synchrotron SOLEIL, Gif-sur-Yvette (France)
  8. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Early Career Award; Canada Foundation for Innovation (CFI); University of Saskatchewan; National Research Council (Italy); Canadian Institutes of Health Research (CIHR); Agence Nationale de la recherche (ANR)
OSTI Identifier:
1487028
Alternate Identifier(s):
OSTI ID: 1477485; OSTI ID: 1480563
Report Number(s):
BNL-209166-2018-JAAM
Journal ID: ISSN 2469-9950
Grant/Contract Number:  
SC0012704; 1047478; AC-02-06CH11357; AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 98; Journal Issue: 18; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Fabbris, Gilberto, Dean, Mark P., Jaouen, N., Meyers, D., Feng, J., Hoffman, J. D., Sutarto, R., Chiuzbaian, G., and Bhattacharya, A. Emergent c-axis magnetic helix in manganite-nickelate superlattices. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.98.180401.
Fabbris, Gilberto, Dean, Mark P., Jaouen, N., Meyers, D., Feng, J., Hoffman, J. D., Sutarto, R., Chiuzbaian, G., & Bhattacharya, A. Emergent c-axis magnetic helix in manganite-nickelate superlattices. United States. doi:10.1103/PhysRevB.98.180401.
Fabbris, Gilberto, Dean, Mark P., Jaouen, N., Meyers, D., Feng, J., Hoffman, J. D., Sutarto, R., Chiuzbaian, G., and Bhattacharya, A. Tue . "Emergent c-axis magnetic helix in manganite-nickelate superlattices". United States. doi:10.1103/PhysRevB.98.180401.
@article{osti_1487028,
title = {Emergent c-axis magnetic helix in manganite-nickelate superlattices},
author = {Fabbris, Gilberto and Dean, Mark P. and Jaouen, N. and Meyers, D. and Feng, J. and Hoffman, J. D. and Sutarto, R. and Chiuzbaian, G. and Bhattacharya, A.},
abstractNote = {Here, the nature of the magnetic order in (La2/3Sr1/3MnO3)9/(LaNiO3)3 superlattices is investigated using x-ray resonant magnetic reflectometry. We observe a new -axis magnetic helix state in the (LaNiO3)3 layers that had never been measured in nickelates, and which mediates the ~130° magnetic coupling between the ferromagnetic (La2/3Sr1/3MnO3)9 layers, illustrating the power of x-rays for discovering the magnetic state of complex oxide interfaces. Resonant inelastic x-ray scattering and x-ray absorption spectroscopy show that Ni-O ligand hole states from bulk LaNiO3 are mostly filled due to interfacial electron transfer from Mn, driving the Ni orbitals closer to an atomic-like 3d8 configuration. We discuss the constraints imposed by this electronic configuration to the microscopic origin of the observed magnetic structure. The presence of a magnetic helix in (La2/3Sr1/3MnO3)9/(LaNiO3)3 is crucial for modeling the potential spintronic functionality of this system and may be important for designing emergent magnetism in novel devices in general.},
doi = {10.1103/PhysRevB.98.180401},
journal = {Physical Review B},
number = 18,
volume = 98,
place = {United States},
year = {Tue Oct 09 00:00:00 EDT 2018},
month = {Tue Oct 09 00:00:00 EDT 2018}
}

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Works referenced in this record:

Magnetic effects at the interface between non-magnetic oxides
journal, June 2007

  • Brinkman, A.; Huijben, M.; van Zalk, M.
  • Nature Materials, Vol. 6, Issue 7, p. 493-496
  • DOI: 10.1038/nmat1931