标题： 通过共振非弹性X射线圆二色性对反铁磁磁振子的系统映射 显示英文标题

标题： Systematic Mapping of Altermagnetic Magnons by Resonant Inelastic X-Ray Circular Dichroism

摘要： 反铁磁体是一类独特的磁性材料，结合了铁磁体和反铁磁体的特性，在自旋电子学和磁子学领域具有潜力。 尽管反铁磁体的电子特性已被广泛研究，但表征其磁子激发对于全面理解其行为并实现实际器件应用至关重要。 在本工作中，我们引入了一种测量协议，结合共振非弹性X射线散射与圆偏振和方位扫描，以探测CrSb中反铁磁分裂磁子模式的手性。 这种方法克服了宏观样品中畴平均带来的挑战，使得能够在单个反铁磁畴中精确测量磁子的极化和能量。 我们的研究结果表明，磁子峰表现出明显的圆二色性，其方位依赖性与理论预测和$g$波对称性一致。 通过建立一种可靠且易于使用的方法来探测反铁磁磁子，本工作为这些集体激发的基本研究以及下一代磁子器件应用开辟了新的途径。 显示英文摘要

摘要： Altermagnets, a unique class of magnetic materials that combines features of both ferromagnets and antiferromagnets, have garnered attention for their potential in spintronics and magnonics. While the electronic properties of altermagnets have been well studied, characterizing their magnon excitations is essential for fully understanding their behavior and enabling practical device applications. In this work, we introduce a measurement protocol combining resonant inelastic X-ray scattering with circular polarization and azimuthal scanning to probe the chiral nature of the altermagnetic split magnon modes in CrSb. This approach circumvents the challenges posed by domain averaging in macroscopic samples, allowing for precise measurements of the polarization and energy of the magnons in individual antiferromagnetic domains. Our findings demonstrate a pronounced circular dichroism in the magnon peaks, with an azimuthal dependence that is consistent with the theoretical predictions and the $g$-wave symmetry. By establishing a reliable and accessible method for probing altermagnetic magnons, this work opens new avenues for fundamental studies of these collective excitations and for developing next-generation magnonic device applications.