Observation of Antiferromagnetic Magnon Pseudospin Dynamics and the Hanle effect

Influence of low-energy magnons on magnon Hanle experiments in easy-plane antiferromagnets

Antiferromagnetic materials host pairs of spin-up and spin-down magnons which can be described in terms of a magnonic pseudospin. The close analogy between this magnonic pseudospin systems and that of electronic charge carriers led to the prediction of fascinating phenomena in antiferromagnets. Recently, the associated dynamics of antiferromagnetic pseudospin has been experimentally demonstrated and, in particular, the first observation of the magnon Hanle effect has been reported. We here expand the magnonic spin transport description by explicitly taking into account contributions of finite-…

非互易磁振子汉勒效应的观测

Observation of nonreciprocal magnon Hanle effect

本文在赤铁矿中观测到磁振子汉勒信号的非互易性，发现交换铂电极的注入/探测角色会改变自旋信号，并用自旋输运方向依赖的赝场解释该现象，表明其可通过外加磁场调控。

反铁磁α-Fe₂O₃中的非互易磁子Hanle效应

Nonreciprocal Magnon Hanle Effect in Antiferromagnetic $α$-Fe$_2$O$_3$

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。

磁各向异性对$α$-Fe$_2$O$_3$中磁振子Hanle效应的影响

Impact of magnetic anisotropy on the magnon Hanle effect in $α$-Fe$_2$O$_3$

本研究通过比较不同氧气氛生长的α-Fe₂O₃薄膜，发现原子氧辅助沉积可改变磁各向异性，增强磁振子Hanle信号并使其峰位向低场移动，为调控磁振子Hanle效应提供了新途径。

压缩和反铁磁磁子伪自旋的量子控制

Squeezing and quantum control of antiferromagnetic magnon pseudospin

研究通过量子涨落工程控制反铁磁磁子伪自旋，实现磁子模式与其它激发的耦合增强和调控，并提出量子比特光谱协议检测压缩伪自旋基态。

Antiferromagnetic magnon pseudospin: Dynamics and diffusive transport

We formulate a theoretical description of antiferromagnetic magnons and their transport in terms of an associated pseudospin. The need and strength of this formulation emerges from the antiferromagnetic eigenmodes being formed from superpositions of spin-up and -down magnons, depending on the material anisotropies. Consequently, a description analogous to that of spin-1/2 electrons is demonstrated while accounting for the bosonic nature of the antiferromagnetic eigenmodes. Introducing the concepts of a pseudospin chemical potential together with a pseudofield and relating magnon spin to pseudo…