Vortical versus skyrmionic states in the topological phase of a twisted bilayer with d-wave superconducting pairing
Leonardo R. Cadorim, Edson Sardella, Milorad V. Milošević
DOI 10.1103/PhysRevB.110.064508 · Physical Review B
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Abstract
It was recently shown that a chiral topological phase emerges from the coupling of two twisted monolayers of superconducting Bi2Sr2CaCu2O8+δ for certain twist angles. In this work, we reveal the behavior of such twisted superconducting bilayers with dx2−y2 pairing symmetry in the presence of an applied magnetic field. Specifically, we show that the emergent vortex matter can serve as a smoking gun for the detection of topological superconductivity in such bilayers. Moreover, we report two distinct skyrmionic states that characterize the chiral topological phase and provide a full account of their experimental signatures and their evolution with the twist angle.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ 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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