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Title: Out-of-plane magnetic anisotropy enhancement in L a 1 - x S r x Co O 3 - δ / L a 2 / 3 S r 1 / 3 Mn O 3 / L a 1 - x S r x Co O 3 - δ thin films

Abstract

Perpendicular magnetic anisotropy (PMA) in multilayer thin films promotes the development of spintronic and magnonic research fields. The origin of the PMA deserves a thorough investigation since it contains rich physics related to multiple factors in the heterostructure system. In this report, we study the origin of PMA in La 2/3Sr 1/3 Mn O 3 (LSMO) thin films sandwiched by La 1-xSr xCoO 3-δ (LSCO) layers grown on SrTiO 3 substrate, using aberration-corrected scanning transmission electron microscopy. Our findings indicate that the lattice and electronic structures of LSMO can be modified through the inhomogeneous strains induced by nanodomains in LSCO layers. Moreover, we infer that the lattice distortion in LSCO at low temperatures is a driving force to reorient the spin moment from in-plane direction to out-of-plane direction in LSMO, which could be the nature of the PMA formation. The symmetry breaking in the LSMO layer induced by the domains from LSCO enhances magnetic anisotropy energy in LSMO.

Authors:
 [1];  [2]; ORCiD logo [2];  [2]; ORCiD logo [2];  [2];  [2];  [2];  [3]; ORCiD logo [3]; ORCiD logo [2]
  1. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics
  2. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1599581
Report Number(s):
BNL-213630-2020-JAAM
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
SC0012704; 2017YFA0206200; 2016YFA0300701
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 101; Journal Issue: 2; 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; Domains; Magnetic anisotropy; Strain; Multilayer thin films; Annular dark-field imaging; Electron energy loss spectroscopy; Scanning transmission electron microscopy

Citation Formats

Wang, Wei, Zhang, Jine, Shen, Xi, Guan, Xiangxiang, Yao, Yuan, Li, Junjie, Gu, Changzhi, Sun, Jirong, Zhu, Yimei, Tao, Jing, and Yu, Richeng. Out-of-plane magnetic anisotropy enhancement in La1-xSrxCoO3-δ/La2/3Sr1/3MnO3/La1-xSrxCoO3-δ thin films. United States: N. p., 2020. Web. doi:10.1103/PhysRevB.101.024406.
Wang, Wei, Zhang, Jine, Shen, Xi, Guan, Xiangxiang, Yao, Yuan, Li, Junjie, Gu, Changzhi, Sun, Jirong, Zhu, Yimei, Tao, Jing, & Yu, Richeng. Out-of-plane magnetic anisotropy enhancement in La1-xSrxCoO3-δ/La2/3Sr1/3MnO3/La1-xSrxCoO3-δ thin films. United States. doi:10.1103/PhysRevB.101.024406.
Wang, Wei, Zhang, Jine, Shen, Xi, Guan, Xiangxiang, Yao, Yuan, Li, Junjie, Gu, Changzhi, Sun, Jirong, Zhu, Yimei, Tao, Jing, and Yu, Richeng. Fri . "Out-of-plane magnetic anisotropy enhancement in La1-xSrxCoO3-δ/La2/3Sr1/3MnO3/La1-xSrxCoO3-δ thin films". United States. doi:10.1103/PhysRevB.101.024406.
@article{osti_1599581,
title = {Out-of-plane magnetic anisotropy enhancement in La1-xSrxCoO3-δ/La2/3Sr1/3MnO3/La1-xSrxCoO3-δ thin films},
author = {Wang, Wei and Zhang, Jine and Shen, Xi and Guan, Xiangxiang and Yao, Yuan and Li, Junjie and Gu, Changzhi and Sun, Jirong and Zhu, Yimei and Tao, Jing and Yu, Richeng},
abstractNote = {Perpendicular magnetic anisotropy (PMA) in multilayer thin films promotes the development of spintronic and magnonic research fields. The origin of the PMA deserves a thorough investigation since it contains rich physics related to multiple factors in the heterostructure system. In this report, we study the origin of PMA in La2/3Sr1/3 Mn O3 (LSMO) thin films sandwiched by La1-xSrxCoO3-δ (LSCO) layers grown on SrTiO3 substrate, using aberration-corrected scanning transmission electron microscopy. Our findings indicate that the lattice and electronic structures of LSMO can be modified through the inhomogeneous strains induced by nanodomains in LSCO layers. Moreover, we infer that the lattice distortion in LSCO at low temperatures is a driving force to reorient the spin moment from in-plane direction to out-of-plane direction in LSMO, which could be the nature of the PMA formation. The symmetry breaking in the LSMO layer induced by the domains from LSCO enhances magnetic anisotropy energy in LSMO.},
doi = {10.1103/PhysRevB.101.024406},
journal = {Physical Review B},
issn = {2469-9950},
number = 2,
volume = 101,
place = {United States},
year = {2020},
month = {1}
}

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