论文标题
抗铁磁性的半身型二个-Heusler dyptbi中野外诱导的磁相变和最终的巨型霍尔效应
Field-induced magnetic phase transitions and the resultant giant anomalous Hall effect in antiferromagnetic half-Heusler DyPtBi
论文作者
论文摘要
我们报告了野战诱导的磁相变和抗磁性染色体的传输特性。我们表明，染色体在两个不同的磁接地态之间具有微妙的平衡，可以通过中等磁场控制。此外，它表现出巨大的异常大厅效应（σ_a= 1540（ohm cm）^{ - 1}，θ_{ahe} = 24％）在野外诱导的类型I旋转结构中，可能归因于与Fermi和 /或nonon-in-or-zeren相关的增强的Berry曲率归因于增强的Berry曲率。后一种机制指向抗抗铁磁体中的罕见潜在实现，并带有面部中心地带晶格，这是在[物理评论Letters 87，116801（2001）]中提出的。
We report field-induced magnetic phase transitions and transport properties of antiferromagnetic DyPtBi. We show that DyPtBi hosts a delicate balance between two different magnetic ground states, which can be controlled by a moderate magnetic field. Furthermore, it exhibits giant anomalous Hall effect (σ_A=1540 (ohm cm)^{-1},θ_{AHE} = 24%) in a field-induced Type-I spin structure, presumably attributed to the enhanced Berry curvature associated with avoided band-crossings near the Fermi energy and / or non-zero spin chirality. The latter mechanism points DyPtBi towards a rare potential realization of anomalous Hall effect in an antiferromagnet with face-center-cubic lattice that was proposed in [Physical Review Letters 87, 116801 (2001)].
