Spin-filter tunneling detection of antiferromagnetic resonance with electrically tunable damping

• 成果类型: Article
• 署名作者: Cham, Thow Min Jerald; Chica, Daniel G.; Huang, Xiaoxi; Watanabe, Kenji; Taniguchi, Takashi; Roy, Xavier; Luo, Yunqiu Kelly; Ralph, Daniel C.
• 署名单位: Cornell University; Columbia University; National Institute for Materials Science; National Institute for Materials Science; University of Southern California; University of Southern California; University of Southern California; California Institute of Technology
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-9102
• DOI: 10.1126/science.adq8590
• 发表日期: 2025-07-31
• 页码: 479-482
• 关键词: driven; magnetoresistance

摘要

Antiferromagnetic spintronics offers the potential for higher-frequency operations and improved insensitivity to magnetic fields compared to ferromagnetic spintronics. However, previous electrical techniques to detect antiferromagnetic dynamics have utilized large, millimeter-scale bulk crystals. In this work, we demonstrate direct electrical detection of antiferromagnetic resonance in structures on the few-micrometer scale using spin-filter tunneling in platinum ditelluride (PtTe2)/bilayer chromium sulfide bromide (CrSBr)/graphite junctions in which the tunnel barrier is the van der Waals antiferromagnet CrSBr. This sample geometry allows not only efficient detection but also electrical control of the antiferromagnetic resonance through spin-orbit torque from the PtTe2 electrode. The ability to efficiently detect and control antiferromagnetic resonance enables detailed studies of the physics governing these high-frequency dynamics.