Enhancing triplet superconductivity by the proximity to a singlet superconductor in oxide heterostructures

Abstract

We show how in principle a coherent coupling between two superconductors of opposite parity can be realized in a three-layer oxide heterostructure. Due to strong intraionic spin-orbit coupling in the middle layer, singlet Cooper pairs are converted into triplet ones and vice versa. This results in a large enhancement of the triplet superconductivity, persisting well above the native triplet critical temperature.

Minor improvements, references added, published version. 5 pages, 3 figures

References in corpus (6)

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• Non-Abelian Topological Order in S-Wave Superfluids of Ultracold Fermionic Atoms
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• Pairing symmetry and dominant band in Sr2RuO4
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Cited by in corpus (4)

• Selection rules for Cooper pairing in two-dimensional interfaces and sheets
• Influence of multiplet structure on photoemission spectra of spin-orbit driven Mott insulators: application to $\mathbf{S}{\mathbf{r}}_2\mathbf{Ir}{\mathbf{O}}_4$
• Controllable enhancement of $p$-wave superconductivity via magnetic coupling to a conventional superconductor
• Robust semi-Dirac points and unconventional topological phase transitions in doped superconducting Sr2IrO4 tunnel coupled to t2g electron systems