Giant electromagnetic proximity effect in superconductor/ferromagnet superlattices

FerromagneticÕsuperconducting proximity effect in La0.7Ca0.3MnO3 ÕYBa2Cu3O7Àd superlattices

Z. Sefrioui, D. Arias,* V. Peña, J. E. Villegas, M. Varela, P. Prieto, C. León, J. L. Martinez, and J. Santamaria GFMC, Departamento de Fisica Aplicada III, Universidad Complutense de Madrid, 28040 Madrid, Spain Departamento de Fisica de los Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain Departamento de Fı́sica, Universidad del Valle A. A. 25360 Cali, Colombia Instituto de Ci...

Giant Proximity Effect and Coupling in Superfluid

Previous measurements of the specific heat of helium-4 (4He) confined in all three spatial dimensions suggested a coupling between neighbor ing confinements through the tiny channels used to fill them [1]. Measurements of the superfluid fraction in the filling channels also suggested an enhancement attributed to their proximity to the larger regions of superfluid [1]. Recent measurements of con...

Giant proximity effect in cuprate superconductors.

Using an advanced molecular beam epitaxy system, we have reproducibly synthesized atomically smooth films of high-temperature superconductors and uniform trilayer junctions with virtually perfect interfaces. We found that supercurrent runs through very thick barriers. We can rule out pinholes and microshorts; this "giant proximity effect" (GPE) is intrinsic. It defies the conventional explanati...

Ferromagnetic/superconducting proximity effect in La0.7Ca0.3MnO3 /YBa2Cu3O7−δ superlattices

Giant proximity effect in a phase-fluctuating superconductor.

When a tunneling barrier between two superconductors is formed by a normal material that would be a superconductor in the absence of phase fluctuations, the resulting Josephson effect can undergo an enormous enhancement. We establish this novel proximity effect by a general argument as well as a numerical simulation and argue that it may underlie recent experimental observations of the giant pr...