标题： 真正手性声子源于手性选择性磁振子-声子耦合 显示英文标题

标题： Truly Chiral Phonons Arising From Chirality-Selective Magnon-Phonon Coupling

摘要： 手性声子在自旋电子学应用中是理想的，但其产生和控制仍然是一个挑战。 在这里，我们展示了在反演对称磁系统中选择性磁振子-声子耦合产生的真正手性声子。 以体心立方铁为例，我们利用第一性原理计算，在整个布里渊区定量计算了混合磁振子-声子准粒子态。 我们的发现挑战了传统的磁弹性解释，并揭示了有限的零点声子角动量以及与有限（自旋）贝利曲率相关的强异常霍尔响应。 我们的结果进一步表明，手性声子的存在，特别是在高对称方向上，在许多磁性材料中是常见的，为新型自旋电子和声子器件提供了有前景的途径。 显示英文摘要

摘要： Chiral phonons are desirable for applications in spintronics but their generation and control remains a challenge. Here we demonstrate the emergence of truly chiral phonons from selective magnon-phonon coupling in inversion-symmetric magnetic systems. Considering bcc Fe as example, we quantitatively calculate hybridized magnon-phonon quasiparticle states across the entire Brillouin zone utilizing first-principles calculations. Our findings challenge conventional magneto-elastic interpretations and reveal finite zero-point phonon angular momentum and strong anomalous Hall responses linked to finite (spin) Berry curvatures. Our results further establish that the existence of chiral phonons, particularly along high-symmetry directions, is common in many magnetic materials, offering promising avenues for novel spintronic and phononic devices.