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Evidence for spin-triplet superconducting correlations in metal-oxide heterostructures with non-collinear magnetization
- Source :
- Phys. Rev. B 90, 035130 (2014)
- Publication Year :
- 2014
-
Abstract
- Heterostructures composed of ferromagnetic La0.7Sr0.3MnO3, ferromagnetic SrRuO3, and superconducting YBa2Cu3Ox were studied experimentally. Structures of composition Au/La0.7Sr0.3MnO3/SrRuO3/YBa2Cu3Ox were prepared by pulsed laser deposition, and their high quality was confirmed by X-ray diffraction and reflectometry. A non-collinear magnetic state of the heterostructures was revealed by means of SQUID magnetometry and polarized neutron reflectometry. We have further observed superconducting currents in mesa-structures fabricated by deposition of a second superconducting Nb layer on top of the heterostructure, followed by patterning with photolithography and ion-beam etching. Josephson effects observed in these mesa-structures can be explained by the penetration of a triplet component of the superconducting order parameter into the magnetic layers.<br />Comment: 10 pages, 6 figures
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 90, 035130 (2014)
- Publication Type :
- Report
- Accession number :
- edsarx.1406.5442
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.90.035130