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

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-07-10 DOI:10.1126/science.adq8590

Thow Min Jerald Cham, Daniel G. Chica, Xiaoxi Huang, Kenji Watanabe, Takashi Taniguchi, Xavier Roy, Yunqiu Kelly Luo, Daniel C. Ralph

引用次数: 0

Abstract

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. Here we demonstrate direct electrical detection of antiferromagnetic resonance in structures on the few-micrometer scale using spin-filter tunneling in PtTe 2 /bilayer 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 PtTe 2 electrode. The ability to efficiently detect and control antiferromagnetic resonance enables detailed studies of the physics governing these high-frequency dynamics.

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电可调阻尼反铁磁共振的自旋滤波器隧穿探测

与铁磁自旋电子学相比，反铁磁自旋电子学提供了更高频率操作的潜力，并改善了对磁场的不敏感性。然而，以前检测反铁磁动力学的电技术使用的是毫米级的大块晶体。在这里，我们展示了在ptt2 /双层CrSBr/石墨结中使用自旋滤波器隧道在几微米尺度上直接检测结构中的反铁磁共振，其中隧道势垒是范德华反铁磁CrSBr。这种样品几何结构不仅可以实现高效检测，还可以通过ptt2电极的自旋轨道扭矩对反铁磁共振进行电气控制。有效地探测和控制反铁磁共振的能力使得对控制这些高频动力学的物理进行详细的研究成为可能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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