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• W2899444312 abstract "Abstract The novel electronic state of the canted antiferromagnetic (AFM) insulator strontium iridate (Sr 2 IrO 4 ) is well described by the spin–orbit‐entangled isospin J eff = 1/2, but the role of isospin in transport phenomena remains poorly understood. In this study, antiferromagnet‐based spintronic functionality is demonstrated by combining the unique characteristics of the isospin state in Sr 2 IrO 4 . Based on magnetic and transport measurements, a large and highly anisotropic magnetoresistance (AMR) is obtained by manipulating the AFM isospin domains. First‐principles calculations suggest that electrons whose isospin directions are strongly coupled to the in‐plane net magnetic moment encounter an isospin mismatch when moving across the AFM 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 this work establishes a link between isospins and magnetotransport in strongly spin–orbit‐coupled AFM Sr 2 IrO 4 , the peculiar AMR effect provides a beneficial foundation for fundamental and applied research on AFM spintronics." @default.
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• W2899444312 date "2018-10-29" @default.
• W2899444312 modified "2023-10-16" @default.
• W2899444312 title "Antiferromagnet‐Based Spintronic Functionality by Controlling Isospin Domains in a Layered Perovskite Iridate" @default.
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• W2899444312 doi "https://doi.org/10.1002/adma.201805564" @default.
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