| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Anomalous anisotropic magnetoresistance in single-crystalline Co/SrTiO3(001) heterostructures |
| Shuang-Long Yang(杨双龙), De-Zheng Yang(杨德政), Yu Miao(缪宇), Cun-Xu Gao(高存绪), and De-Sheng Xue(薛德胜)† |
| Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China |
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Abstract The anisotropic magnetoresistances (AMRs) in single crystalline Co(6 nm)/SrTiO3(001) heterostructures from 5 K to 300 K with the current direction setting along either Co[100] or Co[110] are investigated in this work. The anomalous (normal) AMR is observed below (above) 100 K. With the current along Co[100] direction, the AMR shows negative longitudinal and positive transverse magnetoresistances at T< 100 K, while the AMR is inverse with the current along Co[110]. Meanwhile, the amplitude ratio between Co[110] and Co[100] is observed to be as large as 29 at 100 K. A crystal symmetry-adapted model of AMR demonstrates that interplay between the non-crystalline component and crossed AMR component results in the anomalous AMR. Our results may reveal more intriguing magneto-transport behaviors of film on SrTiO3 or other perovskite oxides.
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Received: 03 March 2021
Revised: 29 April 2021
Accepted manuscript online: 27 May 2021
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PACS:
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73.43.Qt
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(Magnetoresistance)
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73.50.-h
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(Electronic transport phenomena in thin films)
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75.47.-m
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(Magnetotransport phenomena; materials for magnetotransport)
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75.70.-i
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(Magnetic properties of thin films, surfaces, and interfaces)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12174163 and 91963201), the Program for Changjiang Scholars and Innovative Research Team in University, China (Grant No. IRT-16R35), and the 111 Project, China (Grant No. B20063). |
Corresponding Authors:
De-Sheng Xue
E-mail: xueds@lzu.edu.cn
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Cite this article:
Shuang-Long Yang(杨双龙), De-Zheng Yang(杨德政), Yu Miao(缪宇), Cun-Xu Gao(高存绪), and De-Sheng Xue(薛德胜) Anomalous anisotropic magnetoresistance in single-crystalline Co/SrTiO3(001) heterostructures 2021 Chin. Phys. B 30 127302
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