Robust negative longitudinal magnetoresistance and spin–orbit torque in sputtered Pt3Sn and Pt3SnxFe1-x topological semimetal
Abstract Contrary to topological insulators, topological semimetals possess a nontrivial chiral anomaly that leads to negative magnetoresistance and are hosts to both conductive bulk states and topological surface states with intriguing transport properties for spintronics. Here, we fabricate highly...
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| Format: | Article |
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Nature Portfolio
2023-07-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-39408-2 |
| _version_ | 1797778816557383680 |
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| author | Delin Zhang Wei Jiang Hwanhui Yun Onri Jay Benally Thomas Peterson Zach Cresswell Yihong Fan Yang Lv Guichuan Yu Javier Garcia Barriocanal Przemyslaw Wojciech Swatek K. Andre Mkhoyan Tony Low Jian-Ping Wang |
| author_facet | Delin Zhang Wei Jiang Hwanhui Yun Onri Jay Benally Thomas Peterson Zach Cresswell Yihong Fan Yang Lv Guichuan Yu Javier Garcia Barriocanal Przemyslaw Wojciech Swatek K. Andre Mkhoyan Tony Low Jian-Ping Wang |
| author_sort | Delin Zhang |
| collection | DOAJ |
| description | Abstract Contrary to topological insulators, topological semimetals possess a nontrivial chiral anomaly that leads to negative magnetoresistance and are hosts to both conductive bulk states and topological surface states with intriguing transport properties for spintronics. Here, we fabricate highly-ordered metallic Pt3Sn and Pt3SnxFe1-x thin films via sputtering technology. Systematic angular dependence (both in-plane and out-of-plane) study of magnetoresistance presents surprisingly robust quadratic and linear negative longitudinal magnetoresistance features for Pt3Sn and Pt3SnxFe1-x, respectively. We attribute the anomalous negative longitudinal magnetoresistance to the type-II Dirac semimetal phase (pristine Pt3Sn) and/or the formation of tunable Weyl semimetal phases through symmetry breaking processes, such as magnetic-atom doping, as confirmed by first-principles calculations. Furthermore, Pt3Sn and Pt3SnxFe1-x show the promising performance for facilitating the development of advanced spin-orbit torque devices. These results extend our understanding of chiral anomaly of topological semimetals and can pave the way for exploring novel topological materials for spintronic devices. |
| first_indexed | 2024-03-12T23:21:59Z |
| format | Article |
| id | doaj.art-21f8acbaf06c42a2aa22fcb5dae55072 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-12T23:21:59Z |
| publishDate | 2023-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-21f8acbaf06c42a2aa22fcb5dae550722023-07-16T11:20:54ZengNature PortfolioNature Communications2041-17232023-07-011411810.1038/s41467-023-39408-2Robust negative longitudinal magnetoresistance and spin–orbit torque in sputtered Pt3Sn and Pt3SnxFe1-x topological semimetalDelin Zhang0Wei Jiang1Hwanhui Yun2Onri Jay Benally3Thomas Peterson4Zach Cresswell5Yihong Fan6Yang Lv7Guichuan Yu8Javier Garcia Barriocanal9Przemyslaw Wojciech Swatek10K. Andre Mkhoyan11Tony Low12Jian-Ping Wang13Department of Electrical and Computer Engineering, University of MinnesotaDepartment of Electrical and Computer Engineering, University of MinnesotaDepartment of Chemical Engineering and Materials Science, University of MinnesotaDepartment of Electrical and Computer Engineering, University of MinnesotaSchool of Physics and Astronomy, University of MinnesotaDepartment of Electrical and Computer Engineering, University of MinnesotaDepartment of Electrical and Computer Engineering, University of MinnesotaDepartment of Electrical and Computer Engineering, University of MinnesotaCharacterization Facility, University of MinnesotaCharacterization Facility, University of MinnesotaDepartment of Electrical and Computer Engineering, University of MinnesotaDepartment of Chemical Engineering and Materials Science, University of MinnesotaDepartment of Electrical and Computer Engineering, University of MinnesotaDepartment of Electrical and Computer Engineering, University of MinnesotaAbstract Contrary to topological insulators, topological semimetals possess a nontrivial chiral anomaly that leads to negative magnetoresistance and are hosts to both conductive bulk states and topological surface states with intriguing transport properties for spintronics. Here, we fabricate highly-ordered metallic Pt3Sn and Pt3SnxFe1-x thin films via sputtering technology. Systematic angular dependence (both in-plane and out-of-plane) study of magnetoresistance presents surprisingly robust quadratic and linear negative longitudinal magnetoresistance features for Pt3Sn and Pt3SnxFe1-x, respectively. We attribute the anomalous negative longitudinal magnetoresistance to the type-II Dirac semimetal phase (pristine Pt3Sn) and/or the formation of tunable Weyl semimetal phases through symmetry breaking processes, such as magnetic-atom doping, as confirmed by first-principles calculations. Furthermore, Pt3Sn and Pt3SnxFe1-x show the promising performance for facilitating the development of advanced spin-orbit torque devices. These results extend our understanding of chiral anomaly of topological semimetals and can pave the way for exploring novel topological materials for spintronic devices.https://doi.org/10.1038/s41467-023-39408-2 |
| spellingShingle | Delin Zhang Wei Jiang Hwanhui Yun Onri Jay Benally Thomas Peterson Zach Cresswell Yihong Fan Yang Lv Guichuan Yu Javier Garcia Barriocanal Przemyslaw Wojciech Swatek K. Andre Mkhoyan Tony Low Jian-Ping Wang Robust negative longitudinal magnetoresistance and spin–orbit torque in sputtered Pt3Sn and Pt3SnxFe1-x topological semimetal Nature Communications |
| title | Robust negative longitudinal magnetoresistance and spin–orbit torque in sputtered Pt3Sn and Pt3SnxFe1-x topological semimetal |
| title_full | Robust negative longitudinal magnetoresistance and spin–orbit torque in sputtered Pt3Sn and Pt3SnxFe1-x topological semimetal |
| title_fullStr | Robust negative longitudinal magnetoresistance and spin–orbit torque in sputtered Pt3Sn and Pt3SnxFe1-x topological semimetal |
| title_full_unstemmed | Robust negative longitudinal magnetoresistance and spin–orbit torque in sputtered Pt3Sn and Pt3SnxFe1-x topological semimetal |
| title_short | Robust negative longitudinal magnetoresistance and spin–orbit torque in sputtered Pt3Sn and Pt3SnxFe1-x topological semimetal |
| title_sort | robust negative longitudinal magnetoresistance and spin orbit torque in sputtered pt3sn and pt3snxfe1 x topological semimetal |
| url | https://doi.org/10.1038/s41467-023-39408-2 |
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