反铁磁半Heusler DyPtBi的场致磁相变及其巨反常霍尔效应
Field-induced magnetic phase transitions and the resultant giant anomalous Hall effect in antiferromagnetic half-Heusler DyPtBi
摘要：
我们报道了反铁磁DyPtBi的场致磁相变和输运性质。我们发现，DyPtBi主机之间的两个不同的磁基态，这可以通过一个温和的磁场控制的微妙的平衡。此外，在场诱导的I型自旋结构中，它还表现出巨大的反常霍尔效应（σ A=1540（ohm cm）^{-1}，θ AHE} = 24%），这可能是由于在费米能级附近避免了带交叉和/或非零自旋手征导致Berry曲率增强所致.后一种机制指出DyPtBi在[Physical Review Letters 87，116801（2001）]中提出的具有面心立方晶格的反铁磁体中罕见的异常霍尔效应的潜在实现。
英文摘要：
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)].
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
