A systematic synchrotron high‐pressure X‐ray powder diffraction study of Mn₃Sn up to 9 GPa is reported. In this pressure range, the crystal symmetry remains in the hexagonal P6₃/mmc space group, with a continuous reduction of the lattice parameters. Analysis indicates that the Mn₃Sn system may have a different magnetic ground state above 4 GPa due to varying local atomic interactions. This is brought about by the slightly varying compression rate for the in‐plane a‐ and out‐of‐plane c‐axis, respectively, ≈−0.0235 and ≈−0.0176 Å GPa⁻¹. The results contribute to the understanding of the crystal structure to the external continuous tuning parameter pressure, which modulates the geometrical arrangement of the atomic species in Mn₃Sn, thus impacting the interesting physical properties such as the large anomalous Hall effect.

中文翻译：

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高达9 GPa的异常霍尔效应化合物Mn3Sn的高压结构研究

据报道，对高达9 GPa的Mn ₃ Sn进行了系统同步高压X射线粉末衍射研究。在此压力范围内，晶体对称性保持在六边形P6 ₃ / mmc空间群中，晶格参数不断降低。分析表明，由于变化的局部原子相互作用，Mn ₃ Sn系统在4 GPa以上可能具有不同的磁性基态。这是通过在面内的稍微改变压缩率带来一个-和外的平面Ç -轴，分别≈-0.0235和≈-0.0176埃GPA ^-1。结果有助于了解晶体结构对外部连续调谐参数压力的影响，该参数可调节Mn ₃ Sn中原子物种的几何排列，从而影响有趣的物理特性，例如大的异常霍尔效应。