反铁磁体的集体坐标动力学：量子度规引力
Collective Coordinate Dynamics of Antiferromagnet: Gravity by Quantum Metric
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中文总结 AI 辅助
本文提出反铁磁织构的集体坐标动力学由量子度规支配，产生有效引力和洛伦兹力，区别于铁磁Thiele方程，并成功解释光驱动超快反铁磁畴壁的螺旋度不对称运动及预测壁宽呼吸。
中文摘要 AI 辅助
反铁磁和亚铁磁织构的集体坐标动力学表现为测地线方程，该方程由与Néel矢量相关的CP$^1$态的量子几何控制，从而在织构运动中产生有效的黎曼引力和洛伦兹力。这揭示了一种与广泛用于铁磁织构的Thiele方程根本不同的物理场景，后者无惯性且没有任何引力类比。将我们的框架应用于光驱动的超快反铁磁畴壁，我们可以解释实验中观察到的螺旋度相关的不对称运动，并预测畴壁宽度的振动呼吸现象。
英文摘要
The collective coordinate dynamics of antiferromagnetic and ferrimagnetic textures emerges as a geodesic equation governed by the quantum geometry of the CP$^1$ state associated with the Néel vector, rendering an effective Riemannian gravity and a Lorentz force in the texture motion. This unveils a physical scenario fundamentally distinct from the Thiele equation widely used for ferromagnetic textures, which is inertialess without any gravity analogy. Applying our framework to an optically driven ultrafast antiferromagnetic domain wall, we can explain the helicity-dependent asymmetric motion observed experimentally and predict a vibrantly breathing wall width.
发表机构
- University of California, Riverside（加州大学河滨分校）
机构由 AI 辅助整理，请以论文原文为准。
