Electrical Switching of Tristate Antiferromagnetic Néel Order in Epitaxial Films
Abstract
We demonstrate non-decaying, step-like electrical switching of tri-state Néel order in Pt/a-Fe2O3 bilayers detected by spin-Hall induced anomalous Hall effect. The as-grown Pt/a-Fe2O3 bilayers exhibit saw-tooth switching behavior generated by current pulses. After annealing by a high pulse current, the Hall signals reveal single-pulse saturated, non-decaying, step-like switching. Together with control experiments, we show that the saw-tooth switching is due to an artifact of Pt while the actual spin-orbit torque induced antiferromagnetic switching is step-like. Our Monte-Carlo simulations explain the switching behavior of a-Fe2O3 Néel order among three in-plane easy axes.
- 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); National Science Foundation (NSF)
- OSTI Identifier:
- 1594169
- Alternate Identifier(s):
- OSTI ID: 1657488
- Report Number(s):
- DOE-OSU-01304
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US2101328
- Grant/Contract Number:
- SC0001304; DMR-1420451
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 124; Journal Issue: 2; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Antiferromagnetic insulator; electrical switching; Fe2O3
Citation Formats
Cheng, Yang, Yu, Sisheng, Zhu, Menglin, Hwang, Jinwoo, and Yang, Fengyuan. Electrical Switching of Tristate Antiferromagnetic Néel Order in α-Fe2O3 Epitaxial Films. United States: N. p., 2020.
Web. doi:10.1103/PhysRevLett.124.027202.
Cheng, Yang, Yu, Sisheng, Zhu, Menglin, Hwang, Jinwoo, & Yang, Fengyuan. Electrical Switching of Tristate Antiferromagnetic Néel Order in α-Fe2O3 Epitaxial Films. United States. https://doi.org/10.1103/PhysRevLett.124.027202
Cheng, Yang, Yu, Sisheng, Zhu, Menglin, Hwang, Jinwoo, and Yang, Fengyuan. Mon .
"Electrical Switching of Tristate Antiferromagnetic Néel Order in α-Fe2O3 Epitaxial Films". United States. https://doi.org/10.1103/PhysRevLett.124.027202. https://www.osti.gov/servlets/purl/1594169.
@article{osti_1594169,
title = {Electrical Switching of Tristate Antiferromagnetic Néel Order in α-Fe2O3 Epitaxial Films},
author = {Cheng, Yang and Yu, Sisheng and Zhu, Menglin and Hwang, Jinwoo and Yang, Fengyuan},
abstractNote = {We demonstrate non-decaying, step-like electrical switching of tri-state Néel order in Pt/a-Fe2O3 bilayers detected by spin-Hall induced anomalous Hall effect. The as-grown Pt/a-Fe2O3 bilayers exhibit saw-tooth switching behavior generated by current pulses. After annealing by a high pulse current, the Hall signals reveal single-pulse saturated, non-decaying, step-like switching. Together with control experiments, we show that the saw-tooth switching is due to an artifact of Pt while the actual spin-orbit torque induced antiferromagnetic switching is step-like. Our Monte-Carlo simulations explain the switching behavior of a-Fe2O3 Néel order among three in-plane easy axes.},
doi = {10.1103/PhysRevLett.124.027202},
journal = {Physical Review Letters},
number = 2,
volume = 124,
place = {United States},
year = {2020},
month = {1}
}
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