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

Autor: Yi D; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.; Department of Applied Physics, Stanford University, Stanford, California 94305, USA., Flint CL; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.; Department of MSE, Stanford University, Stanford, California 94305, USA., Balakrishnan PP; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.; Department of Physics, Stanford University, Stanford, California 94305, USA., Mahalingam K; Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA., Urwin B; Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA., Vailionis A; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA., N'Diaye AT; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Shafer P; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Arenholz E; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Choi Y; Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA., Stone KH; SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Chu JH; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.; Department of Applied Physics, Stanford University, Stanford, California 94305, USA.; SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Howe BM; Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, USA., Liu J; Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA., Fisher IR; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.; Department of Applied Physics, Stanford University, Stanford, California 94305, USA.; SIMES, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Suzuki Y; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.; Department of Applied Physics, Stanford University, Stanford, California 94305, USA.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2017 Aug 18; Vol. 119 (7), pp. 077201. Date of Electronic Publication: 2017 Aug 14.
DOI: 10.1103/PhysRevLett.119.077201
Abstrakt: 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.
Databáze: MEDLINE
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