Anisotropic magnetoresistance and nontrivial spin Hall magnetoresistance in bilayers
Abstract
Magnetic proximity effect has only been conclusively observed in ferromagnet-based systems. We report the observation of anomalous Hall effect and angular-dependent anisotropic magnetoresistance in Pt on antiferromagnetic (0001) epitaxial films at 10 K, which provide evidence for the magnetic proximity effect. The Neel order of and the induced magnetization in Pt show a unique angular-dependent magnetoresistance compared with all other ferromagnetic and antiferromagnetic systems. In conclusion, a macrospin response model is established and can explain the antiferromagnetic spin configuration and all main magnetoresistance features in the bilayers.
- Authors:
-
- The Ohio State Univ., Columbus, OH (United States)
- Publication Date:
- Research Org.:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); NSF MRSEC
- OSTI Identifier:
- 1594164
- Report Number(s):
- DOE-OSU-01304
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US2101330
- Grant/Contract Number:
- SC0001304; DMR-1420451
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 100; Journal Issue: 22; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Antiferromagnet; Magnetic proximity effect; Anisotropic magnetoresistance; Anomalous Hall effect; Antiferromagnetism; Spin Hall magnetoresistance; Spin generation
Citation Formats
Cheng, Yang, Yu, Sisheng, Ahmed, Adam S., Zhu, Menglin, Rao, You, Ghazisaeidi, Maryam, Hwang, Jinwoo, and Yang, Fengyuan. Anisotropic magnetoresistance and nontrivial spin Hall magnetoresistance in Pt/α–Fe2O3 bilayers. United States: N. p., 2019.
Web. doi:10.1103/PhysRevB.100.220408.
Cheng, Yang, Yu, Sisheng, Ahmed, Adam S., Zhu, Menglin, Rao, You, Ghazisaeidi, Maryam, Hwang, Jinwoo, & Yang, Fengyuan. Anisotropic magnetoresistance and nontrivial spin Hall magnetoresistance in Pt/α–Fe2O3 bilayers. United States. https://doi.org/10.1103/PhysRevB.100.220408
Cheng, Yang, Yu, Sisheng, Ahmed, Adam S., Zhu, Menglin, Rao, You, Ghazisaeidi, Maryam, Hwang, Jinwoo, and Yang, Fengyuan. Mon .
"Anisotropic magnetoresistance and nontrivial spin Hall magnetoresistance in Pt/α–Fe2O3 bilayers". United States. https://doi.org/10.1103/PhysRevB.100.220408. https://www.osti.gov/servlets/purl/1594164.
@article{osti_1594164,
title = {Anisotropic magnetoresistance and nontrivial spin Hall magnetoresistance in Pt/α–Fe2O3 bilayers},
author = {Cheng, Yang and Yu, Sisheng and Ahmed, Adam S. and Zhu, Menglin and Rao, You and Ghazisaeidi, Maryam and Hwang, Jinwoo and Yang, Fengyuan},
abstractNote = {Magnetic proximity effect has only been conclusively observed in ferromagnet-based systems. We report the observation of anomalous Hall effect and angular-dependent anisotropic magnetoresistance in Pt on antiferromagnetic Pt/α–Fe2O3 (0001) epitaxial films at 10 K, which provide evidence for the magnetic proximity effect. The Neel order of Pt/α–Fe2O3 and the induced magnetization in Pt show a unique angular-dependent magnetoresistance compared with all other ferromagnetic and antiferromagnetic systems. In conclusion, a macrospin response model is established and can explain the antiferromagnetic spin configuration and all main magnetoresistance features in the Pt/α–Fe2O3 bilayers.},
doi = {10.1103/PhysRevB.100.220408},
journal = {Physical Review B},
number = 22,
volume = 100,
place = {United States},
year = {Mon Dec 16 00:00:00 EST 2019},
month = {Mon Dec 16 00:00:00 EST 2019}
}
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