---
_id: '9066'
abstract:
- lang: eng
text: The novel electronic state of the canted antiferromagnetic (AFM) insulator,
strontium iridate (Sr2IrO4) has been well described by the spin-orbit-entangled
isospin Jeff = 1/2, but the role of isospin in transport phenomena remains poorly
understood. In this study, antiferromagnet-based spintronic functionality is demonstrated
by combining unique characteristics of the isospin state in Sr2IrO4. Based on
magnetic and transport measurements, large and highly anisotropic magnetoresistance
(AMR) is obtained by manipulating the antiferromagnetic isospin domains. First-principles
calculations suggest that electrons whose isospin directions are strongly coupled
to in-plane net magnetic moment encounter the isospin mismatch when moving across
antiferromagnetic domain boundaries, which generates a high resistance state.
By rotating a magnetic field that aligns in-plane net moments and removes domain
boundaries, the macroscopically-ordered isospins govern dynamic transport through
the system, which leads to the extremely angle-sensitive AMR. As with this work
that establishes a link between isospins and magnetotransport in strongly spin-orbit-coupled
AFM Sr2IrO4, the peculiar AMR effect provides a beneficial foundation for fundamental
and applied research on AFM spintronics.
article_number: '1805564'
article_processing_charge: No
article_type: original
author:
- first_name: Nara
full_name: Lee, Nara
last_name: Lee
- first_name: Eunjung
full_name: Ko, Eunjung
last_name: Ko
- first_name: Hwan Young
full_name: Choi, Hwan Young
last_name: Choi
- first_name: Yun Jeong
full_name: Hong, Yun Jeong
last_name: Hong
- first_name: Muhammad
full_name: Nauman, Muhammad
id: 32c21954-2022-11eb-9d5f-af9f93c24e71
last_name: Nauman
orcid: 0000-0002-2111-4846
- first_name: Woun
full_name: Kang, Woun
last_name: Kang
- first_name: Hyoung Joon
full_name: Choi, Hyoung Joon
last_name: Choi
- first_name: Young Jai
full_name: Choi, Young Jai
last_name: Choi
- first_name: Younjung
full_name: Jo, Younjung
last_name: Jo
citation:
ama: Lee N, Ko E, Choi HY, et al. Antiferromagnet‐based spintronic functionality
by controlling isospin domains in a layered perovskite iridate. Advanced Materials.
2018;30(52). doi:10.1002/adma.201805564
apa: Lee, N., Ko, E., Choi, H. Y., Hong, Y. J., Nauman, M., Kang, W., … Jo, Y. (2018).
Antiferromagnet‐based spintronic functionality by controlling isospin domains
in a layered perovskite iridate. Advanced Materials. Wiley. https://doi.org/10.1002/adma.201805564
chicago: Lee, Nara, Eunjung Ko, Hwan Young Choi, Yun Jeong Hong, Muhammad Nauman,
Woun Kang, Hyoung Joon Choi, Young Jai Choi, and Younjung Jo. “Antiferromagnet‐based
Spintronic Functionality by Controlling Isospin Domains in a Layered Perovskite
Iridate.” Advanced Materials. Wiley, 2018. https://doi.org/10.1002/adma.201805564.
ieee: N. Lee et al., “Antiferromagnet‐based spintronic functionality by controlling
isospin domains in a layered perovskite iridate,” Advanced Materials, vol.
30, no. 52. Wiley, 2018.
ista: Lee N, Ko E, Choi HY, Hong YJ, Nauman M, Kang W, Choi HJ, Choi YJ, Jo Y. 2018.
Antiferromagnet‐based spintronic functionality by controlling isospin domains
in a layered perovskite iridate. Advanced Materials. 30(52), 1805564.
mla: Lee, Nara, et al. “Antiferromagnet‐based Spintronic Functionality by Controlling
Isospin Domains in a Layered Perovskite Iridate.” Advanced Materials, vol.
30, no. 52, 1805564, Wiley, 2018, doi:10.1002/adma.201805564.
short: N. Lee, E. Ko, H.Y. Choi, Y.J. Hong, M. Nauman, W. Kang, H.J. Choi, Y.J.
Choi, Y. Jo, Advanced Materials 30 (2018).
date_created: 2021-02-02T15:50:58Z
date_published: 2018-10-29T00:00:00Z
date_updated: 2021-02-03T13:58:39Z
day: '29'
doi: 10.1002/adma.201805564
extern: '1'
external_id:
arxiv:
- '1811.04562'
intvolume: ' 30'
issue: '52'
keyword:
- Mechanical Engineering
- General Materials Science
- Mechanics of Materials
language:
- iso: eng
month: '10'
oa_version: Preprint
publication: Advanced Materials
publication_identifier:
issn:
- 0935-9648
- 1521-4095
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Antiferromagnet‐based spintronic functionality by controlling isospin domains
in a layered perovskite iridate
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 30
year: '2018'
...