Abstract
We report detailed studies on ferromagnet-superconductor bilayer structures. Epitaxial bilayer structures of half metal-colossal magnetoresistive (HMCMR) and high- superconducting (HTSC) are grown on single-crystalline substrates using pulsed laser deposition. Magnetization measurements show the coexistence of ferromagnetism and superconductivity in these structures at low temperatures. Using the HMCMR layer as an electrode for spin polarized electrons, we discuss the role of spin polarized self injection into the HTSC layer. The experimental results are in good agreement with a presented theoretical estimation, where the spin diffusion length is found to be in the range of .
- Received 18 January 2004
DOI:https://doi.org/10.1103/PhysRevB.70.144517
©2004 American Physical Society