Superconducting anti-dot arrays from self-assembly template methods
A.A.Zhukov (1), E.T.Filby (1), M.A.Ghanem (2), P.N.Bartlett (2), P. A., J. de Groot (1) ((1) School of Physics, Astronomy, University of, Southampton, UK, (2)School of Chemistry, University of Southampton,, Southampton, UK)
TL;DR
This paper demonstrates a method to create highly ordered superconducting nano-structures using self-assembly templates, revealing notable quantum oscillations and magnetic effects in the resulting materials.
Contribution
It introduces a novel electrochemical deposition technique for fabricating 3D superconducting nano-structures with self-assembled templates, enabling detailed study of their magnetic properties.
Findings
Observation of Little-Parks oscillations in Tc
Matching effects in magnetization and susceptibility
Universal Cole-Cole curve behavior in susceptibility
Abstract
We present results of electrochemical deposition of superconducting Pb in the pores of templates prepared by self-assembly from colloidal suspensions of polystyrene latex spheres. This technique enables us to create highly ordered superconducting nano-structures with 3D architectures on length scales ranging from 50 - 1000 nm. The prepared samples show pronounced Little-Parks oscillations in Tc and matching effects in magnetization and magnetic susceptibility. Real and imaginary parts of susceptibility follow a universal Cole-Cole curve. Self-field effects play an important role in commensurability behaviour of magnetic moment at low temperatures.
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