发表机构
Indian Institute of Technology Delhi; Max-Planck-Institute for Chemical Physics of Solids; Department of Physics, Institute for Materials Research, Tohoku University（印度理工学院德里分校; 马克斯·普朗克固体化学物理研究所; 东北大学物质材料研究学院物理学系）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究全面研究了扭曲kagome磁体Tb6Ti4Al43的磁电性质，发现其具有强变磁切换和各向异性磁输运，并确立了该材料作为场可调多功能平台。
AI 中文摘要
我们报告了对单晶Tb6Ti4Al43的磁性、电学和热力学性质的全面研究，其中Tb原子形成嵌入在复杂Ti-Al框架中的扭曲kagome晶格。Tb6Ti4Al43表现出显著的磁各向异性，并在约19 K时出现反铁磁有序。当磁场沿c轴施加时，观察到强变磁切换，并伴有低温下清晰的不对称磁滞回线；而当磁场沿ab平面施加时，观察到自旋翻转转变。场诱导磁态的影响在磁输运测量中得到强烈反映，导致磁电阻出现显著异常以及反常霍尔贡献。观察到反常霍尔电导率的显著本征贡献，突显了由系统动量空间拓扑引起的Berry曲率效应。我们的结果突显了Tb6Ti4Al43中自旋、电荷和晶格自由度之间的相互作用，并将这种扭曲kagome反铁磁体确立为场可调多功能行为的有前景平台，包括电可读磁切换、自旋操控和磁机械功能。
英文摘要
We report a comprehensive investigation of the magnetic, electrical, and thermodynamic properties of single crystalline Tb6Ti4Al43, in which Tb atoms form a distorted kagome lattice embedded within a complex Ti-Al framework. Tb6Ti4Al43 exhibits pronounced magnetic anisotropy and antiferromagnetic ordering at approximately 19 K. For magnetic field applied along the c-axis, a strong metamagnetic switching is observed, accompanied by a clear asymmetric hysteresis at low temperatures, while for field applied along the ab plane, a spin-flop transition is observed. The effect of field induced magnetic states is strongly reflected in magnetotransport measurements, giving rise to pronounced anomalies in magnetoresistance and an anomalous Hall contribution. A significant intrinsic contribution to the anomalous Hall conductivity is observed, highlighting the Berry curvature effects arising from the system's momentum-space topology. Our results highlight the interplay of spin, charge, and lattice degrees of freedom in Tb6Ti4Al43 and establish this distorted kagome antiferromagnet as a promising platform for field-tunable multifunctional behaviour, including electrically readable magnetic switching, spin manipulation, and magneto-mechanical functionalities.
