论文标题
工程手性拓扑超导性超导率
Engineering chiral topological superconductivity in twisted Ising superconductors
论文作者
论文摘要
NBSE $ _2 $或TAS $ _2 $（例如NBSE $ _2 $）等范德华材料已经证明了超导性，直到原子上薄层。由于自旋轨道耦合，这些超导体的平面内临界磁场远远超出了Pauli极限。从理论上讲，我们表明，被铁磁缓冲层隔开的扭曲的双层伊斯丁超导体可以自然地携带手性手性拓扑超导与Chern数字，这可以在$ \ MATHRM {NBSE_2/CRCL_2/CRCL_3/NBSE_2}等异质结构中实现。在适当的实验条件下，拓扑超导间隙可以达到$> 0.1 $ MEV，从而导致易于观察的特征，例如低温下的量化热室传输。
Van der Waals materials like NbSe$_2$ or TaS$_2$ have demonstrated Ising superconductivity down to atomically thin layers. Due to the spin-orbit coupling, these superconductors have the in-plane upper critical magnetic field far beyond the Pauli limit. We theoretically demonstrate that, twisted bilayer Ising superconductors separated by a ferromagnetic buffer layer can naturally host chiral topological superconductivity with Chern numbers, which can be realized in heterostructures like $\mathrm{NbSe_2/CrCl_3/NbSe_2}$. Under appropriate experimental conditions the topological superconducting gap can reach $>0.1$ meV, leading to readily observable signatures such as the quantized thermal Hall transport at low temperatures.
