论文标题
扭曲的淋巴结超导体中的电流和现场诱导的拓扑
Current- and field-induced topology in twisted nodal superconductors
论文作者
论文摘要
我们表明，层间电流诱导扭曲的淋巴结超导体双层中的拓扑超导性。散装间隙打开并达到``魔法'''''''''''''''''''\ mathrm {ma} $。手性边缘模式在低温下导致量化的热厅效应。此外，我们表明一个平面磁场会创建具有拓扑结构域的周期性晶格，边缘模式形成低能带。我们预测它们在扫描隧道显微镜中的特征。候选材料的估计表明，扭转角$θ\simθ_\ mathrm {ma} $对于观察预测效果是最佳的。
We show that interlayer current induces topological superconductivity in twisted bilayers of nodal superconductors. A bulk gap opens and achieves its maximum near a ``magic'' twist angle $θ_\mathrm{MA}$. Chiral edge modes lead to a quantized thermal Hall effect at low temperatures. Furthermore, we show that an in-plane magnetic field creates a periodic lattice of topological domains with edge modes forming low-energy bands. We predict their signatures in scanning tunneling microscopy. Estimates for candidate materials indicate that twist angles $θ\sim θ_\mathrm{MA}$ are optimal for observing the predicted effects.
