AI 中文总结
该研究针对Shiba-Majorana混合系统，提出通过超流探测拓扑非平凡吸附原子系统基态宇称变化的非侵入式方案，揭示临界电流的特征不连续性，验证了结果在有限温度和不同隧穿 regime下的鲁棒性。
AI 中文摘要
Majorana零模的非阿贝尔统计特性已催生了诸多在拓扑超导体中探测与操控Majorana零模的方案。基于沉积在超导体上的磁性吸附原子的实现方案因具备精确原子操控能力和对无序的控制能力而备受关注。本文提出一种方案，通过将超电流通入拓扑非平凡吸附原子系统的低能模式，来探测其基态宇称的变化。我们揭示了由零能能级交叉驱动的临界电流中存在特征性不连续性。我们将这些发现应用于由单个承载Yu-Shiba-Rusinov态的可控磁性吸附原子介导Majorana耦合的装置中，并测试了结果在有限温度和不同隧穿 regime下的鲁棒性。我们的发现为读取和控制Shiba-Majorana混合系统中Majorana态的基态宇称引入了一种非侵入式方法。
英文摘要
The non-Abelian statistics of Majorana zero modes has inspired numerous proposals for their detection and manipulation in topological superconductors. Implementations based on magnetic adatoms deposited on superconductors draw particular attention due to their capabilities for precise atomic manipulation and the control over disorder. Here, we propose a scheme for detecting changes in the ground state parity of a topologically non-trivial adatom system by passing supercurrent through their low-energy modes. We unravel characteristic discontinuities in the critical current driven by zero-energy level crossings. We apply these findings to a setup where the Majorana coupling is mediated by a single control magnetic adatom hosting a Yu-Shiba-Rusinov state, and test the robustness of our results against finite temperatures and different tunneling regimes. Our findings introduce a non-invasive approach for reading out and controlling the ground state parity of Majorana states in Shiba-Majorana hybrid systems.
Comments17 pages, 7 figures, Comments are welcome
