Inverse proximity effects at spin-triplet superconductor-ferromagnet interface
Abstract
We investigate proximity effects in a spin-triplet superconductor (TSC) interfaced with a ferromagnet (FM), assuming different types of magnetic profiles and chiral or helical pairings. The region of the coexistence of spin-triplet superconductivity and magnetism is significantly influenced by the orientation and spatial extension of the magnetization with respect to the spin configuration of the Cooper pairs, resulting in clear-cut anisotropy signatures. A characteristic mark of the inverse proximity effect arises in the induced spin polarization at the TSC-FM interface. This is unexpectedly stronger when the magnetic proximity is weaker, thus unveiling immediate detection signatures for spin-triplet pairs. We show that an anomalous magnetic proximity can occur at the interface between the itinerant ferromagnet Sr Ru O3 and the unconventional superconductor Sr2Ru O4 . Such scenario indicates the potential to design characteristic inverse proximity effects in experimentally available Sr Ru O3-Sr2Ru O4 heterostructures and to assess the occurrence of spin-triplet pairs in the highly debated superconducting phase of Sr2Ru O4 .
- Publication:
-
Physical Review Research
- Pub Date:
- July 2021
- DOI:
- 10.1103/PhysRevResearch.3.033008
- arXiv:
- arXiv:2101.03611
- Bibcode:
- 2021PhRvR...3c3008M
- Keywords:
-
- Condensed Matter - Superconductivity
- E-Print:
- 11 pages, 6 figures