Engineering chiral topological superconductivity in twisted Ising superconductors
arXiv:2206.01304 · doi:10.1103/PhysRevB.106.125136
Abstract
Van der Waals materials like NbSe or TaS 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 . Under appropriate experimental conditions the topological superconducting gap can reach meV, leading to readily observable signatures such as the quantized thermal Hall transport at low temperatures.
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