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手性磁子是磁有序体系中一种独特的自旋集体激发，其色散在动量反演下不再对称，自旋波沿相反方向传播时呈现不同的本征频率和寿命，因此在自旋信息传输、非互易器件以及热自旋转换等方面具有重要的应用潜力。 近年来，交错磁性的提出与迅速发展，拓展了手性磁子的物理起源与研究框架， 使其成为凝聚态物理的研究前沿。本文系统梳理手性磁子的物理机制及研究进展，揭示其从对称性破缺至多体非厄米调控的完整体系，并探讨室温器件化路径。通过文献综述与理论分析相结合，归纳手性磁子的物理起源、对称判据、典型材料验证、拓扑边缘态、输运补偿效应，以及多体相干与非厄米效应。展望高通量手性磁子材料筛选、跨平台联用测量及几何相位工程， 以期推动手性磁子向低功耗自旋逻辑与量子路由的实用化发展，为磁子学研究开辟创新路径。本综述可为手性磁子的物理机制解析、新材料制备与实验观测，以及相关电子器件设计提供参考。Chiral magnons are collective spin excitations whose dispersions break momentum inversion symmetry, $\omega(\boldsymbol{k}) \neq \omega(-\boldsymbol{k})$, leading to intrinsically nonreciprocal spin-wave propagation. This built-in directionality offers new opportunities for spin information transfer, thermal-spin interconversion, and low-dissipation nonreciprocal microwave devices, in a manner complementary to but distinct from topological magnonics. This review develops a unified framework for chiral magnons, covering symmetry-breaking mechanisms, material realizations, transport responses and many-body non-Hermitian dynamics, and evaluates routes toward room-temperature, device-relevant platforms. The discussion is based on symmetry analysis, model Hamiltonians and spin-wave theory, in combination with first-principles calculations and recent spectroscopic and transport measurements. The microscopic origins of chiral magnons are organized into three interrelated aspects, spin-orbit coupling (SOC)-driven Dzyaloshinskii-Moriya interactions (DMI) in non-centrosymmetric magnets and interfaces, altermagnetism in the weak SOC regime without DMI, and the spin space group (SSG) framework. On this basis, representative materials such as CrSb, α-MnTe, RuO2 and MnF2 are compared in terms of energy scales, coherence, momentum anisotropy and experimental visibility, clarifying how magnon splittings and lifetimes are reflected in direction-dependent spin Seebeck, spin Nernst and thermal Hall signals. The review further summarizes bulk-gap and Berry-curvature induced chiral edge states, enhancement of nonreciprocity via chiral spin pumping and cavity-magnon hybrids, and non-Hermitian features arising from multiparticle damping and gain-loss competition. Furthermore, remaining challenges, such as the stability of physical properties at room temperature, quantitative calibration of spectral and transport properties, as well as many-body competition also outlined. Finally, the possible strategies based on SSG-guided materials screening, multi-modal metrology and geometry phase engineering toward efficient spin logic, THz isolators and quantum routing based on chiral magnons also proposed.
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Keywords:
- Chiral magnons /
- altermagnetism /
- non-reciprocal propagation /
- spin transport
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