Cascading Proximity Effects in Rotating Magnetizations

Abstract

We demonstrate two effects that occur in all diffusive superconducting-magnetic heterostructures with rotating magnetization: the reappearance of singlet $|0,0>$ correlations deep in the magnetic material and a cascade of $s=1$, $m=0,\pm 1$ components (in the two spin-$1/2$ basis $|s,m>$). We do so by examining the order parameter and Josephson current through a multilayer with five mutually perpendicular ferromagnets. The properties of the middle layer determine whether the current is due to $m=0$ or $m\ne 0$ contributions. We conclude that so-called long- and short-range components are present across a proximity system with rotating magnetization.

5 pages, 4 figures

References in corpus (5)

• Striking properties of Superconductor/Ferromagnet structures with spin-dependent scattering
• 0-pi Transitions in a Superconductor/Chiral Ferromagnet/Superconductor Junction induced by a Homogeneous Cycloidal Spiral
• Superharmonic Josephson relation at 0-/$\pi$-junction transition
• Josephson current in a superconductor -- ferromagnet -- superconductor junction with in-plane ferromagnetic domains
• Effective spin-flip scattering in diffusive superconducting proximity systems with magnetic disorder