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Title: Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in ( La 1 x Sr x MnO 3 ) / ( SrIrO 3 ) Superlattices

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 La1-xSrxMnO 3 and SrIrO 3 , we find that all superlattices (0≤x≤1) exhibit ferromagnetism despite the fact that La1-xSrxMnO 3 is antiferromagnetic for x > 0.5. PMA as high as 4×106 erg/cm3 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.

Authors:
 [1];  [1];  [1];  [2];  [2];  [1];  [3];  [3];  [3];  [4];  [5];  [6];  [2];  [7];  [8];  [1]
  1. Stanford Univ., Stanford, CA (United States)
  2. Air Force Research Lab., Wright-Patterson AFB, OH (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  6. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of Washington, Seattle, WA (United States)
  7. Univ. of Tennessee, Knoxville, TN (United States)
  8. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1390323
Alternate Identifier(s):
OSTI ID: 1375054; OSTI ID: 1458503
Grant/Contract Number:  
FA9550-16-1-0235; N00014-15-1-0045; SC0008505; AC02-76SF00515; AC02-05CH11231; AC02-06CH11357; DMR-1402685; HR0011-16-1-0005
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 7; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Yi, Di, Flint, Charles L., Balakrishnan, Purnima P., Mahalingam, Krishnamurthy, Urwin, Brittany, Vailionis, Arturas, N’Diaye, Alpha T., Shafer, Padraic, Arenholz, Elke, Choi, Yongseong, Stone, Kevin H., Chu, Jiun -Haw, Howe, Brandon M., Liu, Jian, Fisher, Ian R., and Suzuki, Yuri. Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La1–xSrxMnO3)/(SrIrO3) Superlattices. United States: N. p., 2017. Web. https://doi.org/10.1103/PhysRevLett.119.077201.
Yi, Di, Flint, Charles L., Balakrishnan, Purnima P., Mahalingam, Krishnamurthy, Urwin, Brittany, Vailionis, Arturas, N’Diaye, Alpha T., Shafer, Padraic, Arenholz, Elke, Choi, Yongseong, Stone, Kevin H., Chu, Jiun -Haw, Howe, Brandon M., Liu, Jian, Fisher, Ian R., & Suzuki, Yuri. Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La1–xSrxMnO3)/(SrIrO3) Superlattices. United States. https://doi.org/10.1103/PhysRevLett.119.077201
Yi, Di, Flint, Charles L., Balakrishnan, Purnima P., Mahalingam, Krishnamurthy, Urwin, Brittany, Vailionis, Arturas, N’Diaye, Alpha T., Shafer, Padraic, Arenholz, Elke, Choi, Yongseong, Stone, Kevin H., Chu, Jiun -Haw, Howe, Brandon M., Liu, Jian, Fisher, Ian R., and Suzuki, Yuri. Mon . "Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La1–xSrxMnO3)/(SrIrO3) Superlattices". United States. https://doi.org/10.1103/PhysRevLett.119.077201. https://www.osti.gov/servlets/purl/1390323.
@article{osti_1390323,
title = {Tuning Perpendicular Magnetic Anisotropy by Oxygen Octahedral Rotations in (La1–xSrxMnO3)/(SrIrO3) Superlattices},
author = {Yi, Di and Flint, Charles L. and Balakrishnan, Purnima P. and Mahalingam, Krishnamurthy and Urwin, Brittany and Vailionis, Arturas and N’Diaye, Alpha T. and Shafer, Padraic and Arenholz, Elke and Choi, Yongseong and Stone, Kevin H. and Chu, Jiun -Haw and Howe, Brandon M. and Liu, Jian and Fisher, Ian R. and Suzuki, Yuri},
abstractNote = {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 La1-xSrxMnO 3 and SrIrO 3 , we find that all superlattices (0≤x≤1) exhibit ferromagnetism despite the fact that La1-xSrxMnO 3 is antiferromagnetic for x > 0.5. PMA as high as 4×106 erg/cm3 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.},
doi = {10.1103/PhysRevLett.119.077201},
journal = {Physical Review Letters},
number = 7,
volume = 119,
place = {United States},
year = {2017},
month = {8}
}

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