论文标题
通过接近性诱导的超导性的石墨烯中的手性马匹费
Chiral Majorana fermions in graphene from proximity-induced superconductivity
论文作者
论文摘要
我们基于受DFT模拟启发的有效模型，介绍了手性拓扑超导体阶段的详细理论研究。诱导S波超导对量子异常效应系统导致手性拓扑超导体。对于平面外磁化，我们发现拓扑超导阶段每个边缘的手性较大较大的载体数量均匀，这与$ \ mathrm {K k} $中的批量系统中的非平凡差距有关 - 点及其连接在粒子对称下。我们表明，在$ \ mathrm {m} $上具有平面内磁化和非平凡间隙开口的量子异常的霍尔绝缘子中，可以将相应的拓扑超导体调整为仅托管在其边缘的单个手性major，这是为了利用此类贴贴的建议，这是有希望的。
We present a detailed theoretical study of chiral topological superconductor phases in proximity-superconducting graphene systems based on an effective model inspired by DFT simulations. Inducing s-wave superconductivity to quantum anomalous Hall effect systems leads to chiral topological superconductors. For out-of-plane magnetization we find topological superconducting phases with even numbers of chiral Majorana fermions per edge which is correlated to the opening of a nontrivial gap in the bulk system in the $\mathrm{ K}$-points and their connection under particle-hole symmetry. We show that in a quantum anomalous Hall insulator with in-plane magnetization and nontrivial gap opening at $\mathrm{M}$, the corresponding topological superconductor can be tuned to host only single chiral Majorana states at its edge which is promising for proposals exploiting such states for braiding operations.
