Nonsymmetric current–voltage characteristics in ferromagnet/superconductor thin film structures

Touitou, N.; Bernstein, P.; Hamet, J. F.; Simon, Ch.; L. Méchin; Contour, J. P.; Jacquet, E.
September 2004
Applied Physics Letters;9/6/2004, Vol. 85 Issue 10, p1742
Academic Journal
We found that the current–voltage characteristics measured on La0.66Sr0.33MnO3/YBa2Cu3O7-δ thin film heterostructures patterned as microbridges are nonsymmetric if the magnetization direction of the La0.66Sr0.33MnO3 film is in plane and perpendicular to the current direction. This effect is attributed to the contribution of the magnetic moment of this film to the vertical component of the field along the edges of the bridge. We suggest that this effect could find an application in the reading process of magnetic memories.


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