发表机构
Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften; TUM School of Natural Sciences, Technische Universität München; Condensed Matter Physics Center (IFIMAC) and Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid; Munich Center for Quantum Science and Technology (MCQST)（瓦尔特·迈斯纳研究所，巴伐利亚科学院; 慕尼黑工业大学自然科学学院; 马德里自治大学凝聚态物理中心（IFIMAC）和凝聚态物质理论物理系; 慕尼黑量子科学与技术中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究在反铁磁α-Fe₂O₃中观测到非互易磁子Hanle效应，互换Pt电极角色会改变磁子自旋信号，该差值随磁场变化且在补偿场处符号反转，为反铁磁磁子学的类电子学现象应用提供了新可能。
AI 中文摘要
磁子赝自旋围绕平衡赝场的进动产生了磁子Hanle效应，该平衡赝场表征反铁磁体中磁子本征激发的性质。通过在反铁磁绝缘体中进行电注入和自旋输运检测实现该效应，表明其在器件应用及作为探测反铁磁体磁子本征模式和底层自旋相互作用的便捷探针方面具有高潜力。本研究中，我们利用两个空间分离的Pt电极作为自旋注入器和探测器，在α-Fe₂O₃中测量到Hanle信号存在非互易性：互换两者角色会改变检测到的磁子自旋信号，记录的差值取决于外加磁场，且当信号在所谓补偿场处经过标称最大值时符号反转。这些发现揭示了反铁磁磁子学在实现类电子学现象方面的高潜力。
英文摘要
The precession of the magnon pseudospin about the equilibrium pseudofield, the latter capturing the nature of magnonic eigenexcitations in an antiferromagnet, gives rise to the magnon Hanle effect. Its realization via electrically injected and detected spin transport in an antiferromagnetic insulator demonstrates its high potential for devices and as a convenient probe for magnon eigenmodes and the underlying spin interactions in the antiferromagnet. Here, we observe a non-reciprocity in the Hanle signal measured in alpha-Fe2O3 using two spatially separated Pt electrodes as spin injector and detector. Interchanging their roles alters the detected magnon spin signal. The recorded difference depends on the applied magnetic field and reverses sign when the signal passes its nominal maximum at the so-called compensation field. Our findings unlock the high potential of antiferromagnetic magnonics towards the realization of electronics-inspired phenomena.
Comments2 pages, 1 figure
Journal ref2023 IEEE International Magnetic Conference - Short Papers INTERMAG Short Papers, 1-2 (2023)
DOI：10.1109/INTERMAGShortPapers58606.2023.10228477
