Research Data Leeds Repository

Data set for 'Control of superconductivity with a single ferromagnetic layer in niobium/erbium bilayers'

Satchell, Nathan and Witt, J.D.S. and Flokstra, Machiel and Lee, Steve and Cooper, J.F.K. and Kinane, Christian and Langridge, Sean and Burnell, Gavin (2017) Data set for 'Control of superconductivity with a single ferromagnetic layer in niobium/erbium bilayers'. University of Leeds. [Dataset]

Dataset description

Superconducting spintronics in hybrid superconductor{ferromagnet (S{F) heterostructures provides an exciting potential new class of device. The prototypical super-spintronic device is the superconducting spin-valve, where the critical temperature, Tc, of the S-layer can be controlled by the relative orientation of two (or more) F-layers. Here, we show that such control is also possible in a simple S/F bilayer. Using Field history to set the remanent magnetic state of a thin Er layer, we demonstrate for a Nb/Er bilayer a high level of control of both Tc and the shape of the resistive transition, R(T), to zero resistance. We are able to model the origin of the remanent magnetization, treating it as an increase in the effective exchange Field of the ferromagnet and link this, using conventional S{F theory, to the suppression of Tc. We observe stepped features in the R(T) which we argue is due to a fundamental interaction of superconductivity with inhomogeneous ferromagnetism, a phenomena currently lacking theoretical description.

Keywords: Physics, Applied Physics, Solid State Physics
Subjects: F000 - Physical sciences > F300 - Physics
F000 - Physical sciences > F300 - Physics > F310 - Applied physics
F000 - Physical sciences > F300 - Physics > F320 - Chemical physics > F321 - Solid-state physics
Divisions: Faculty of Engineering and Physical Sciences > School of Physics and Astronomy
Related resources:
License: Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited: 12 Apr 2017 14:17



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