| Mn_(3)Sn的高压物性研究 |
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| 引用本文： | 周文星,刘晓迪,迟振华.Mn_(3)Sn的高压物性研究[J].低温物理学报,2022(2):103-107. |
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| 作者姓名： | 周文星 刘晓迪 迟振华 |
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| 作者单位： | 中国科学院合肥物质科学研究院固体物理研究所, 合肥 230031;中国科学技术大学研究生院科学岛分院, 合肥 230026;宁波大学物理科学与技术学院高压物理科学研究院, 宁波 315211 |
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| 基金项目： | 国家自然科学基金(批准号:11674328,11874361,U1832123)资助的课题. |
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| 摘 要： | 非共线三角晶格的反铁磁体Mn_(3)Sn,由于其动量空间中非零的贝里曲率而表现出反常霍尔效应.利用金刚石对顶砧研究压力对Mn_(3)Sn低温电输运性质和反常霍尔效应的影响.结果表明:Mn_(3)Sn在0~60GPa压力范围内保持金属导电行为;从非共线磁有序到螺旋磁有序的转变温度随压力增加先降低,在5.5GPa以上迅速升高,对应一个等结构电子拓扑转变;Mn_(3)Sn的反常霍尔效应在5.5GPa被完全抑制.
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| 关 键 词： | 高压 Mn_(3)Sn 反常霍尔效应 |
Physical Properties of Mn3Sn under High Pressure |
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| HOU Wenxing,LIU Xiaodi,CHI Zhenhua.Physical Properties of Mn3Sn under High Pressure[J].Chinese Journal of Low Temperature Physics,2022(2):103-107. |
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| Authors: | HOU Wenxing LIU Xiaodi CHI Zhenhua |
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| Institution: | Institute of Solid State Physics , Hefei Institutes of Physical Science , Chinese Academy of Sciences , Hefei 230031 ; Science Island Branch , Graduate School of USTC , Hefei 230026 ;; Institute of High Pressure Physics , School of Physical Science and Technology , Ningbo University , Ningbo 315211 |
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| Abstract: | The noncollinear triangular antiferromagnet Mn3Sn exhibits anomalous Hall effect due to its non-zero Berry curvature in momentum space. We studied the effect of pressure on electrical transport properties and anomalous Hall effect of Mn3Sn in diamond anvil cell. The results show that the transition temperature from noncollinear magnetic order to helical magnetic order decreases first and then increases rapidly with increasing pressure. The transition pressure occurs at 5. 5 GPa, corresponding to an isostructural electronic topological transition. Meanwhile, the anomalous Hall effect is gradually suppressed by pressure till vanishes at 5. 5 GPa. These results demonstrate that pressure is an effective tuning knob to modify the magnetism and anomalous Hall effect of magnetic materials. |
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| Keywords: | High-pressure Mn3Sn Anomalous Hall effect |
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