Asymmetric Ground States in La$_{0.67}$Sr$_{0.33}$MnO$_3$/BaTiO$_3$ heterostructures Induced by Flexoelectric Bending
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
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2022
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| _version_ | 1866910492475260928 |
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| author | Qi, Mingqun Yang, Zhen Chen, Shengru Lin, Shan Jin, Qiao Hong, Haitao Rong, Dongke Guo, Haizhong Wang, Can Jin, Kui-juan Wu, Zhenping Guo, Er-Jia |
| author_facet | Qi, Mingqun Yang, Zhen Chen, Shengru Lin, Shan Jin, Qiao Hong, Haitao Rong, Dongke Guo, Haizhong Wang, Can Jin, Kui-juan Wu, Zhenping Guo, Er-Jia |
| contents | Misfit strain delivered from single-crystal substrates typically modifies the ground states of transition metal oxides, generating increasing interests in designing modern transducers and sensors. Here, we demonstrate that magnetotransport properties of La$_{0.67}$Sr$_{0.33}$MnO$_3$ (LSMO) films were continuously tuned by uniaxial strain produced by a home-designed bending jig. The electrical conductivity and Curie temperature of LSMO films are enhanced by bending stresses. The resistivity of a u-shape bended LSMO decays three times faster than that of a n-shape bended LSMO as a response to the same magnitude of strain. The asymmetric magnetic states in uniaxially strained LSMO are attributed to the dual actions of Jahn-Teller distortion and strain gradient mediated flexoelectric fields in an adjacent ferroelectric layer. These findings of multi-field regulation in a single material provide a feasible means for developing flexible electronic and spintronic devices. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2207_03297 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Asymmetric Ground States in La$_{0.67}$Sr$_{0.33}$MnO$_3$/BaTiO$_3$ heterostructures Induced by Flexoelectric Bending Qi, Mingqun Yang, Zhen Chen, Shengru Lin, Shan Jin, Qiao Hong, Haitao Rong, Dongke Guo, Haizhong Wang, Can Jin, Kui-juan Wu, Zhenping Guo, Er-Jia Materials Science Misfit strain delivered from single-crystal substrates typically modifies the ground states of transition metal oxides, generating increasing interests in designing modern transducers and sensors. Here, we demonstrate that magnetotransport properties of La$_{0.67}$Sr$_{0.33}$MnO$_3$ (LSMO) films were continuously tuned by uniaxial strain produced by a home-designed bending jig. The electrical conductivity and Curie temperature of LSMO films are enhanced by bending stresses. The resistivity of a u-shape bended LSMO decays three times faster than that of a n-shape bended LSMO as a response to the same magnitude of strain. The asymmetric magnetic states in uniaxially strained LSMO are attributed to the dual actions of Jahn-Teller distortion and strain gradient mediated flexoelectric fields in an adjacent ferroelectric layer. These findings of multi-field regulation in a single material provide a feasible means for developing flexible electronic and spintronic devices. |
| title | Asymmetric Ground States in La$_{0.67}$Sr$_{0.33}$MnO$_3$/BaTiO$_3$ heterostructures Induced by Flexoelectric Bending |
| topic | Materials Science |
| url | https://arxiv.org/abs/2207.03297 |