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Yi D, Flint CL, Balakrishnan PP, et al. Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La_{1-x}Sr_{x}MnO_{3})/(SrIrO_{3}) Superlattices. Phys Rev Lett. 2017;119(7):077201doi: 10.1103/PhysRevLett.119.077201.
Yi, D., Flint, C. L., Balakrishnan, P. P., Mahalingam, K., Urwin, B., Vailionis, A., N'Diaye, A. T., Shafer, P., Arenholz, E., Choi, Y., Stone, K. H., Chu, J. H., Howe, B. M., Liu, J., Fisher, I. R., & Suzuki, Y. (2017). Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La_{1-x}Sr_{x}MnO_{3})/(SrIrO_{3}) Superlattices. Physical review letters, 119(7), 077201. https://doi.org/10.1103/PhysRevLett.119.077201
Yi, Di, et al. "Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La_{1-x}Sr_{x}MnO_{3})/(SrIrO_{3}) Superlattices." Physical review letters vol. 119,7 (2017): 077201. doi: https://doi.org/10.1103/PhysRevLett.119.077201
Yi D, Flint CL, Balakrishnan PP, Mahalingam K, Urwin B, Vailionis A, N'Diaye AT, Shafer P, Arenholz E, Choi Y, Stone KH, Chu JH, Howe BM, Liu J, Fisher IR, Suzuki Y. Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La_{1-x}Sr_{x}MnO_{3})/(SrIrO_{3}) Superlattices. Phys Rev Lett. 2017 Aug 18;119(7):077201. doi: 10.1103/PhysRevLett.119.077201. Epub 2017 Aug 14. PMID: 28949659.
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Phys Rev Lett. 2017 Aug 18;119(7):077201. doi: 10.1103/PhysRevLett.119.077201. Epub 2017 Aug 14.

Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La_{1-x}Sr_{x}MnO_{3})/(SrIrO_{3}) Superlattices.

Physical review letters

Di Yi, Charles L Flint, Purnima P Balakrishnan, Krishnamurthy Mahalingam, Brittany Urwin, Arturas Vailionis, Alpha T N'Diaye, Padraic Shafer, Elke Arenholz, Yongseong Choi, Kevin H Stone, Jiun-Haw Chu, Brandon M Howe, Jian Liu, Ian R Fisher, Yuri Suzuki

Affiliations

  1. Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.
  2. Department of Applied Physics, Stanford University, Stanford, California 94305, USA.
  3. Department of MSE, Stanford University, Stanford, California 94305, USA.
  4. Department of Physics, Stanford University, Stanford, California 94305, USA.
  5. Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA.
  6. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  7. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA.
  8. SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  9. SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  10. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA.

PMID: 28949659 DOI: 10.1103/PhysRevLett.119.077201

Abstract

Perpendicular magnetic anisotropy (PMA) plays a critical role in the development of spintronics, thereby demanding new strategies to control PMA. Here we demonstrate a conceptually new type of interface induced PMA that is controlled by oxygen octahedral rotation. In superlattices comprised of La_{1-x}Sr_{x}MnO_{3} and SrIrO_{3}, we find that all superlattices (0≤x≤1) exhibit ferromagnetism despite the fact that La_{1-x}Sr_{x}MnO_{3} is antiferromagnetic for x>0.5. PMA as high as 4×10^{6}  erg/cm^{3} is observed by increasing x and attributed to a decrease of oxygen octahedral rotation at interfaces. We also demonstrate that oxygen octahedral deformation cannot explain the trend in PMA. These results reveal a new degree of freedom to control PMA, enabling discovery of emergent magnetic textures and topological phenomena.

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