Proximity Effect and Spontaneous Vortex Phase in Planar SF Structures
The proximity effect in SF structures was examined. It is shown that, due to the oscillations of the induced superconducting order parameter in a ferromagnet, the critical temperature of an SF-bilayer becomes minimal when the thickness of the ferromagnetic layer is close to a quarter of the period of spatial oscillations. It is found that the spontaneous vortex state arisen in the superconductor due to the proximity of the magnetic domain structure of a ferromagnet brings about noticeable magnetoresistive effects.
Soviet Journal of Experimental and Theoretical Physics Letters
- Pub Date:
- January 2003
- Condensed Matter - Superconductivity
- 9 pages, 5 figures, published in JETP Lett