论文标题
韦尔材料中双边界的费米弧的传输特征
Transport signatures of Fermi arcs at twin boundaries in Weyl materials
论文作者
论文摘要
Weyl Fermions最引人注目的特征之一是其表面费米弧。鲜为人知的是，费米弧也可以定位在两种相反手性的Weyl材料的内部双胞胎边界。在这项工作中，我们对这些“内部费米弧”的拓扑和连通性产生了限制。我们表明，内部费米弧可以表现出运输特征并提出两个探针：量子振荡和量化的手性磁电流。我们建议通过模型和从头算计算验证Merohefrally Twin的B20材料作为候选候选者，以容纳内部费米弧。我们的理论研究阐明了拓扑特征的灯光，并激发了对内部费米（Fermi）弧形物理学的实验研究。
One of the most striking signatures of Weyl fermions is their surface Fermi arcs. Less known is that Fermi arcs can also be localized at internal twin boundaries where two Weyl materials of opposite chirality meet. In this work, we derive constraints on the topology and connectivity of these "internal Fermi arcs." We show that internal Fermi arcs can exhibit transport signatures and propose two probes: quantum oscillations and a quantized chiral magnetic current. We propose merohedrally twinned B20 materials as candidates to host internal Fermi arcs, verified through both model and ab initio calculations. Our theoretical investigation sheds lights on the topological features and motivates experimental studies into the intriguing physics of internal Fermi arcs.
