--- _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' ...