Control of magnetic anisotropy by orbital hybridization in (La0.67Sr0.33MnO3)n/(SrTiO3)n superlattice
| Title: | Control of magnetic anisotropy by orbital hybridization in (La0.67Sr0.33MnO3)n/(SrTiO3)n superlattice |
|---|---|
| Authors: | Zhang, Bangmin, Wu, Lijun, Zheng, Jincheng, Yang, Ping, Yu, Xiaojiang, Ding, Jun, Heald, Steve M., Rosenberg, R. A., Venkatesan, T., Chen, Jingsheng, Sun, Cheng-Jun, Zhu, Yimei, Chow, Gan Moog |
| Publication Year: | 2017 |
| Collection: | Condensed Matter |
| Subject Terms: | Condensed Matter - Materials Science |
| More Details: | The asymmetry of chemical nature at the hetero-structural interface offers an unique opportunity to design desirable electronic structure by controlling charge transfer and orbital hybridization across the interface. However, the control of hetero-interface remains a daunting task. Here, we report the modulation of interfacial coupling of (La0.67Sr0.33MnO3)n/(SrTiO3)n superlattices by manipulating the periodic thickness with n unit cells of SrTiO3 and n unit cells La0.67Sr0.33MnO3. The easy axis of magnetic anisotropy rotates from in-plane (n = 10) to out-of-plane (n = 2) orientation at 150 K. Transmission electron microscopy reveals enlarged tetragonal ratio > 1 with breaking of volume conservation around the (La0.67Sr0.33MnO3)n/(SrTiO3)n interface, and electronic charge transfer from Mn to Ti 3d orbitals across the interface. Orbital hybridization accompanying the charge transfer results in preferred occupancy of 3d3z2-r2 orbital at the interface, which induces a stronger electronic hopping integral along the out-of-plane direction and corresponding out-of-plane magnetic easy axis for n = 2. We demonstrate that interfacial orbital hybridization in superlattices of strongly correlated oxides may be a promising approach to tailor electronic and magnetic properties in device applications. |
| Document Type: | Working Paper |
| DOI: | 10.1038/s41427-018-0084-8 |
| Access URL: | http://arxiv.org/abs/1709.03903 |
| Accession Number: | edsarx.1709.03903 |
| Database: | arXiv |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1038/s41427-018-0084-8 Subjects: – SubjectFull: Condensed Matter - Materials Science Type: general Titles: – TitleFull: Control of magnetic anisotropy by orbital hybridization in (La0.67Sr0.33MnO3)n/(SrTiO3)n superlattice Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zhang, Bangmin – PersonEntity: Name: NameFull: Wu, Lijun – PersonEntity: Name: NameFull: Zheng, Jincheng – PersonEntity: Name: NameFull: Yang, Ping – PersonEntity: Name: NameFull: Yu, Xiaojiang – PersonEntity: Name: NameFull: Ding, Jun – PersonEntity: Name: NameFull: Heald, Steve M. – PersonEntity: Name: NameFull: Rosenberg, R. A. – PersonEntity: Name: NameFull: Venkatesan, T. – PersonEntity: Name: NameFull: Chen, Jingsheng – PersonEntity: Name: NameFull: Sun, Cheng-Jun – PersonEntity: Name: NameFull: Zhu, Yimei – PersonEntity: Name: NameFull: Chow, Gan Moog IsPartOfRelationships: – BibEntity: Dates: – D: 12 M: 09 Type: published Y: 2017 |
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