Volume 107, Number 1, July 2014
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||02 July 2014|
Cascading proximity effects in rotating magnetizations
1 Department of Physics & Astronomy, California State University Long Beach - Long Beach, CA 90840, USA
2 Department of Physics & Astronomy, University of California, Irvine - Irvine, CA 92697, USA
3 Instituto de Ciencia de Materiales de Madrid, CSIC - Cantoblanco, 28015 Madrid, Spain
Received: 13 June 2014
Accepted: 16 June 2014
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,±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 ≠ 0 contributions. We conclude that so-called long- and short-range components are present across a proximity system with rotating magnetization.
PACS: 74.50.+r – Tunneling phenomena; Josephson effects / 74.78.Fk – Multilayers, superlattices, heterostructures / 74.25.F- – Transport properties
© EPLA, 2014
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