Journal
CHINESE PHYSICS B
Volume 30, Issue 12, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1674-1056/ac05ad
Keywords
single crystalline; anisotropic magnetoresistance; heterostructure
Categories
Funding
- National Natural Science Foundation of China [12174163, 91963201]
- Program for Changjiang Scholars and Innovative Research Team in University, China [IRT-16R35]
- 111 Project, China [B20063]
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This study investigated the anisotropic magnetoresistances in single crystalline Co(6 nm)/SrTiO3(001) heterostructures, revealing anomalous AMR phenomena and proposing a crystal symmetry-adapted model to explain it.
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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