利用反对称康普顿散射成像二维反铁磁体中的奈尔矢量
Imaging the Néel Vector in Two-Dimensional Antiferromagnets using Antisymmetric Compton Scattering
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中文总结 AI 辅助
研究利用反对称康普顿散射检测二维反铁磁体中奈尔矢量的切换与旋转。通过探测磁电多极子克服传统技术局限，结合群论分解与计算表明反对称康普顿轮廓对奈尔矢量方向敏感，确立其为范德华材料相关现象的通用探针。
中文摘要 AI 辅助
我们证明反对称康普顿散射可以检测二维反铁磁体中奈尔矢量的切换和连续旋转。通过探测耦合电偶极子和磁偶极子的磁电多极子，该方法克服了依赖有限净磁化强度的传统技术的局限性。利用二维MnPS₃中交错矩的群论分解并结合第一性原理计算，我们表明反对称康普顿轮廓对奈尔矢量方向高度敏感：在奈尔矢量反转时符号反转，在面内旋转时表现出明显的各向异性。这些结果确立了反对称康普顿轮廓作为范德华材料中反铁磁序和磁电现象的通用探针。
英文摘要
We demonstrate that antisymmetric Compton scattering can detect both the switching and the continuous rotation of the Néel vector in two-dimensional (2D) antiferromagnets. By probing magnetoelectric (ME) multipoles, which couple electric and magnetic dipoles, this approach overcomes the limitations of conventional techniques that rely on a finite net magnetization. Using a group-theoretical decomposition of the staggered moments in 2D MnPS$_3$ into irreducible representations, combined with first-principles calculations, we show that the antisymmetric Compton profile (ACP) is highly sensitive to the Néel vector orientation: it reverses sign under Néel vector reversal and exhibits distinct anisotropies under in-plane rotation. These results establish the ACP as a versatile probe of antiferromagnetic (AFM) order and magnetoelectric phenomena in van der Waals materials.
