Engineering chiral topological superconductivity in twisted Ising superconductors
Xiaodong Hu, Ying Ran
DOI 10.1103/PhysRevB.106.125136 · Physical Review B
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Abstract
van der Waals materials such as NbSe2 or TaS2 have demonstrated Ising superconductivity down to atomically thin layers. Due to the spin-orbit coupling, these superconductors have an 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 such as NbSe2/CrCl3/NbSe2. Under appropriate experimental conditions the topological superconducting gap can reach >0.1meV, leading to readily observable signatures such as quantized thermal Hall transport at low temperatures.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| TaS2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| MoS2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| NbS2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| TaSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2212 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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