Effects from magnetic boundary conditions in superconducting-magnetic proximity systems

Baker, Thomas E.; Bill, Andreas

doi:10.1063/1.4943155

Cited by 2 publications

(14 citation statements)

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“…The increased twist is expected to lead to a stronger current. 25 We note two more features seen in Fig. 5.…”

Section: A Triplet Componentsmentioning

confidence: 88%

“…By contrast a helical F is composed of one material but the magnetic boundary conditions (the curvature in particular) change with Q. 25 The boundary condition also changes at given twist when varying the thickness of the material. While φ(x) flattens at both edges of the XS (leading to an infinite curvature on both ends), the corresponding function in the helical structure has different slopes at the right edge as one varies either Qξ c or the thickness.…”

Section: A Helical Domain Wallsmentioning

confidence: 99%

“…76 A full discussion is given in Ref. 25. The different magnetic configurations considered in this paper are depicted in Fig.…”

Section: E the Magnetic Configurationmentioning

confidence: 99%

“…While φ(x) flattens at both edges of the XS (leading to an infinite curvature on both ends), the corresponding function in the helical structure has different slopes at the right edge as one varies either Qξ c or the thickness. 25 Noteworthy is that the parallel and perpendicular components, f , f ⊥ , are symmetric, reflecting the linear form of the angle and the constant curvature of the helical profile. The XS does not possess this feature.…”

Section: A Helical Domain Wallsmentioning

confidence: 99%

“…The effect of magnetic boundary conditions are discussed in Ref. 25. The main points are that for the helix, ∂h(x)/∂x is different at both ends of the magnetic layer except for the special case when the distance is commensurate with the period of the helix.…”

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confidence: 99%

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Classification of magnetic inhomogeneities and0−πtransitions in superconducting-magnetic hybrid structures

2016

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We present a comparative study of pair correlations and currents through superconductingmagnetic hybrid systems with a particular emphasis on the tunable Bloch domain wall of an exchange spring. This study of the Gor'kov functions contrasts magnetic systems with domain walls that change at discrete points in the magnetic region with those that change continuously throughout. We present results for misaligned homogeneous magnetic multilayers, including spin valves, for discrete domain walls, as well as exchange springs and helical domain walls -such as Holmiumfor the continuous case. Introducing a rotating basis to disentangle the role of singlet and triplet correlations, we demonstrate that substantial amounts of (so-called short range) singlet correlations are generated throughout the magnetic system in a continuous domain wall via the cascade effect. We propose a classification of 0 − π transitions of the Josephson current into three types, according to the predominant pair correlations symmetries involved in the current. Properties of exchange springs for an experimental study of the proposed effects are discussed. The interplay between components of the Gor'kov function that are parallel and perpendicular to the local magnetization lead to a novel prediction about their role in a proximity system with a progressively twisting helix that is experimentally measurable.

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“…The increased twist is expected to lead to a stronger current. 25 We note two more features seen in Fig. 5.…”

Section: A Triplet Componentsmentioning

confidence: 88%

Section: A Helical Domain Wallsmentioning

confidence: 99%

“…76 A full discussion is given in Ref. 25. The different magnetic configurations considered in this paper are depicted in Fig.…”

Section: E the Magnetic Configurationmentioning

confidence: 99%

Section: A Helical Domain Wallsmentioning

confidence: 99%

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