The transport properties of YBa2Cu3O7-σ/permalloy interfaces as a function of temperature and small magnetic fields are presented. High quality (001) and (100) oriented YBa2Cu3O7-σ (YBCO) thin films are prepared by the off-axis sputtering technique. Permalloy (Ni0.8Fe0.2) films are then deposited on top of the YBCO films, and patterned in order to obtain sub-millimeter contacts. The interface resistances in the normal and superconducting state of the YBCO are measured as a function of an applied magnetic field. The results are discussed in the framework of electron spin transport across the interface and spin diffusion in the bulk of the superconductor.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering